Angry Birds Unused Content

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Original Game

Angry Birds Classic is the first Angry Birds game to be released. As such, it has a lot of unused content as seen below.

ABSync in 2.3.0 and Rovio Account in 3.0.0

In iOS 2.3.0 & 3.0.0, there are prototype version of the Rovio Account images (known as ABSync in 2.3.0). If either iOS version is ported and ABsync is on, the button doesn't appear regardless if it's on or not. But if it's enabled and installed on an actual iOS device, the button does appear. Similar to 3.1.0-4.1.0, if a level is completed the first time, and if the next level button is pressed, on both versions, the popup appears.

ABSync popup (2.3.0)

Rovio Account popup (3.0.0)

Unused Coming Soon Button

There exists an unused button (and its darker version) in versions 1.2.0 to 1.3.1.

Earlier Level Designs

Poached Eggs and Mighty Hoax

As seen in an old Facebook photo album, a handful of level designs were changed during development. For example, King Pig's debut level was changed to have less pillars and shorter Corporal Pig structures, likely to make the level easier, and the six extra wooden blocks in Foreman Pig’s debut level were completely taken out. What's interesting to note here is that there also exists Mighty Hoax levels using Poached Eggs' backgrounds and that the pop-up points the player receives when they destroy blocks in the final build hadn't been added yet.

Danger Above

One image on the Rovio Museum website is of 7-3 of Danger Above in Poached Eggs’s first theme.

Unused Theater and Porta Potty Blocks

The in-game sprites for the blocks in version 1.0 of Angry Birds contain unused theater blocks, likely to be used in levels. Note the porta potty block in the middle of the image (next to the Swedish flag and brown blocks). It still is in the PC 1.0.0 (and Android 1.4.0)'s Level Editor, as an invisible block.

Prototype 2010 Logo Redesigns

Before the finalized 2010 Angry Birds logo, there were concepts released in 2015 by John Roshell for the next game in the series, Angry Birds Seasons. These concepts showed fans of the series what the finalized logo could have looked like. They had decided to drop the “2″ from the game title and were going to just market it as an upgrade from the current one.

Unused Episodes

Year of the Goat

In the files, there is a sprite for a button of the episode Year of The Goat that is not used in the game and was probably meant to be released in the start of 2015, since this was the latest Year of The Goat and it uses the Classic Designs. The Chinese Version of the game features Year of the Goat as a playable episode, but the levels in it are taken directly from the international levels.

Moon Festival

In the files, there is a sprite for a button of the episode Moon Festival that is not used in the game and was probably meant to be released probably in the same year or in 2016, 2017 or 2018, because it's also in the same assets as Bird Island and Tutorial, since Moon Festival's button is in the same assets as the Year of the Goat and it uses the Classic Designs. While not used in the international version, the Chinese version of the game features this episode in a fully playable state.

Year Of The Goat's Theme

Red's Mighty Feathers Part 3

In the files of the game, there are two unused sprite sheets for a third part of Red's Mighty Feathers, as both of them are labeled as "SEEING RED". The first sprite sheet includes sprites of pigs with scubas and deep-sea diving suits. One of them is with their original design which is wearing a deep-sea diving suit. Other pigs are the chrome design and are wearing scubas. additionally, some damaged/corpse sprite got an red and purple X on it, it means that this sprite was a placeholder.

There are also air tanks, duck feet, a lily, a mushroom, cave helmets, (Which are unused designs of the ones found in Mine and Dine) and grass forms.

The other sprite sheet includes sprites of Red using his ability and getting wet, as well as sprites of feathers and water effects. This strongly suggests that part 3 would introduce water in the game.

Angry Birds Land

In version HD 2.3.0's files, there are object sprites and a possible background for an episode named ABLAND, which is short for Angry Birds Land. There are objects such as a Horse springy ride, funfair food, and toys. There are also hats that were used in Birdday Party. The episode would have been Funfair or Amusement Park themed.

Unused Birds

Chuck Speed

Main article: Chuck Speed

An unused bird in version 4.1.0's data, it uses Chuck's sprites but has a similar ability to Kanan Jarrus, speeding through all blocks in its way until it hits a solid surface.

Chuck Speed's Trail

TNT Bird

An unused bird in version 4.1.0, to put it simply, it's a bird that acts like a TNT box. Uses Bomb's sound effects.

Fire Bird

Main article: Fire Bird

In the files, there are sprites for a version of Red named Fire Bird. This version would charge as an ability and set fire on whatever he touches.

Sprites

Blocks

Unused Ability

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Unused Sprites

Ability Icons

In version 1.0 and in the official gameplay trailer of the game, each bird had their specific ability icons appear at the bottom right of the screen when launching them from the slingshot. These icons would disappear when the player used the bird's ability (tapping/clicking on the screen once).

Music note (Red and Terence)

Splitting (The Blues)

Speed (Chuck)

Explosion (Bomb)

Egg-laying (Matilda)

New Bird Loading

Purple Feathers

Since Angry Birds PC 1.0.0, purple feathers went unused in the INGAME_BIRDS_1 sheet. Previously rumoured to be Terence's, these feathers actually belonged to the unused Purple Bird as seen in the original gameplay mockup, and the concept art that was first shown in the Rovio Museum. (Located in INGAME_BIRDS_1 (source: PC 4.0.0))

They can also be seen in the files for Angry Birds Trilogy.

Here are all of the feathers

The feathers are shown on the bottom left.

The Bird and its corresponding feathers.

Mighty Mouse (Mighty Eagle's bait)

Mighty Mouse was originally going to be the bait for Mighty Eagle found in version 1.4.1. It acted differently, where the Eagle would simply drop down from the screen and instantly defeat every Pig and complete the level.

The Feathers also weren't originally a thing, instead the level completion screen would say "Level Skipped!".

Mighty Mouse sprites

Individual sprite

Fire Blocks

In the files for the iOS version, there are sprites for Fire Blocks, meant to be used together with Fire Bird. Code would probably be used to make them have a different appearance.

Leonard

There are some sprites of Leonard that were never used in-game, such as sleeping, sweating, crying, cheerful and others. This is because Leonard's sprites are modified King Pig sprites.

Sauropods

In the Jurassic Pork background sprites, there are sprites for sauropods. However, they never appear in the levels' backgrounds. They are only found in the cutscenes.

They are seen at the top right.

Cardboard Pigs

In the pigs' sprite sheet, there are sprites for cardboard versions of the normal pigs. They were probably meant to appear in the Tutorial.

They would likely act as normal pigs, just as the Scarecrow Pigs do. They don't have any corpse sprites, meaning that they were likely only objects, unfinished, or would be instantly defeated.

Bad Piggies Objects

In the files, there are sprites for destroyed versions of the normal objects. In the game, the objects are only destroyed, meaning they have only one state. There are also a pipe wrench and blue caps for the pigs that are never used in the episode.

Golden Trophies

In the files, there are sprites for golden versions of the trophy objects, that were possibly meant to be the 3 Star version of them or Golden Eggs.

Wooden Fuse

In that same sheet, there are two sprites for wooden poles with red and yellow tips. They were used in early versions of Angry Birds in a Danger Above level, but were removed afterwards.

Puzzle Piece

In the same files, there is a sprite for a blue puzzle piece. It is unknown what this would have been.

Map Sprites

In the files of 4.2.0 in IOS there were map sprites called (MAP_BACKGROUNDS_SHEET_0).

Code for the map was found in the files for the HD version, however the levels on it are taken from Birdday 4 and Bad Piggies.

The full map put together.

The map in-game.

Extra Birds

In version 1.6.0 of Angry Birds Free (both HD and SD) and version 4.2.0 of Angry Birds (both HD and SD), there was abutton called "INGAME_BUTTON_NEWBIRD" paired with the script "Powerup_ExtraBird.lua". This button would've let you choose any of the 9 main birds to spawn into the level at any given time.

Cropped buttons

Full sheet

Anger

In the files, there are sprites and scripts for a feature named Anger. This feature would consist of the player filling a bird's Anger meter, whereas having Anger full would activate the Anger button. Clicking on it would make a bird charged with Anger, which would have let it perform a special ability, they are the following:

• Red/Fire Bird: Unleashes a nuclear explosion.
• The Blues: Unleashes a firework.
• Chuck: Unleashes a tornado.
• Matilda: Unleashes a rainbow cloud.

Red with Potion effects

In the files in the Windows Phone Version, there are sprites which is Red using the three Potions, two Sprites from this sheet were later used in Rovio Classics: Angry Birds in the file INGAME_BIRDS_2.

Birds Levels

Stella Level

There is an unused level in the game called Stella Level (sic), which will refuse to load. The level would probably have featured rescuing Stella, as shown by the script name in the files where Chuck Speed, TNT Bird and Bubbles scripts are (data/scripts/subsystems/prototyping)

Bubbles

Bubbles' level, unlike Stella, is actually able to load properly. However, by normal means, the level won't load correctly, will always have a score of zero and the Slingshot is stuck under the ground. No Birds will included in the level either. Editing the game files shows that this level was a Bubbles mini-game level, where you try and avoid TNT while controlling Bubbles with your finger.

Pig Feeder Level

There is another unused level in the game called Pig Feeder Level, where you control a Pig and have to collect food.

Pause Screen Map

In v2.0.0, the game's pause screen was changed and had four buttons at the bottom. They were news, games, videos and a map. The latter was never released due to the pause screen being changed in the next update.

Unused Toons designs of Minion Pigs and Red's Flock

Part of the scrapped "Free to Play" update, these more Toons-like designs were supposed to replace the Chrome designs. Notably, the Pigs' spritesheet contains sprites related to the unused Fire Bird, being pigs being lit on fire and being charred. However, the sprites for the birds have been used in Angry Birds Champions and in Angry Birds World Tour.

Unused Poster

There is an unused poster of the above described update. It is a file with a poster that has a texture of buttons and a wood background. It is an image of 29-14 of Flock Favorites that doesn’t have Bomb present and uses the above mentioned unused design. This poster was featured in the News tab (Paused Game Screen).

Unused Poached Eggs Background

In the files, there's a tile set for a new design for Poached Eggs, that is more realistic, and being oil painted. It would possibly be part of the update. However, it's not used anywhere. It also matches the 2013 episodes' background scheme.

Mighty League

Tickets

Tickets could be used in the Mighty League in order to play the levels and could be found in the Bird Island levels (Which were replaced by Shockwaves). But in recent updates, they don't appear anymore in the game. They were deleted to make the game more fair.

Stickers

Some stickers were unused or retextured such as:

• One featured a defeated Hal in a rectangular form as an icon. To obtain this sticker, the player had to use a lot of birds. This sticker was retextured to Red using the Slingshot as an icon. The form of the sticker is now a star.
• One featured tickets in an oval form as an icon. To get this sticker, the player has to use a determined number of tickets. This was deleted because tickets are not used anymore.

  

Snow Cannon

In one of the Mighty League levels, there is a warning message saying that a sprite is missing. The name of the sprite is "snowcannon". It's most likely the Snow Cannon from the Angry Birds Friends Winter Tournaments. The message is the following:

Sprites Missing

Sprites: MISC_SNOWCANNON,

The Snow Cannon itself.

Build settings

• releaseBuild: Retail, clean build. Turning off makes the game act like a debugging build, enabling debugging functions and some screens have debugging information like the credits, defaulted to true, It also uses a developer activation server and allows the use of using all developer cheats on beta builds.
• showEditor: Shows the level and particle editors at the main menu, defaulted to false, if the version is below 7.2.0, it crashes among toggling this setting while checking for editor. lua.
• cheatsEnabled: Allows the use of built-in developer cheats. False is defaulted.
• useDynamicAssets: Makes the game use assets from the dynamic script directory. Turning off has some weird effects. True is defaulted.
• isPremium: Makes the game acts like a "premium" version, ads are disabled, false is defaulted.
• isKorea: Makes the game act like a Korean build. False is defaulted.
• applyChinaRestictions: Makes the game act as a Chinese build. A timer is shown for game time left, false is defaulted. However, it can be replaced by localization.
• gameVersionNumber: The game's version number shown in credits. Changes after every update.
• customerString: OEM is based on how the game was acquired, commonly "googleplay".
• svnRevisionNumber: Server revision number in last credits line.
• g_hasWebBrowser: Makes the game think you have a web browser to view ads. Defaulted to true.
• bingIsEnabled: Allows Bing usage in game. Only works on older versions.
• enableAssertions: Enables assertions.
• useScaling: Toggles scaling settings. Default is true.
• timeMachineServer: What server is used (for time). dev is defaulted.
• gameId: Short identifier for the game when clicking ads that log it. Defaulted to abc.
• g_separate_powerup_highscore: Allows power-up based high scores separately to be kept along with plain gameplay scores in a highscores.lua. True is defaulted.
• applyLocalization: Applies a predetermined localization.
• isHDVersion: Makes the game act like a iOS HD build, possibly shows HD sprites and textures if on. False is defaulted.
• g_use_mighty_league: Makes the game show Mighty League on the main menu, true is defaulted.
• g_use_ingame_ads: Makes the game use in-game ads, defaulted to true.

Old Versions

• g_challengesEnabled: Enables a challenge mode, currently isn't fully enabled.
• g_hatcheryEnabled: Enables a hatchery mode that can't be enabled on stock Classic versions due to missing files. In this mode, stars would be a currency. (not to be confused with the Star currency from new classic.) The mode has been found in the TestFlight Teraleak in the game "Angry Birds Island"

Power-Ups

Egg Bomb

There was supposed to be another power-up that would make Egg Bombs fall from the sky with parachutes, but Rovio cut this idea, most likely due to the power-up resembling Matilda's special ability. This was essentially just an early version of the power-ups "TNT Drop (Angry Birds Rio), Energy TNT (Angry Birds Friends Winter Tournaments), and AlakaBAM (Angry Birds Seasons)". This was also planned to be used in Angry Birds Facebook, but was scrapped for the same reasons.

The Unused Egg Bomb Power-Up sprites (The Parachute is next to the destroyed Sandcastle and the Egg Bomb to the normal Sandcastle)

Put together

Removed Features

Before Crystal SDK shut down, versions 1.2.0-2.1.0 used it for the leaderboards. This was replaced by Game Center.

Windows Port

The Mobile version might have a fair share of Unused Content. The Windows Port has lots of Unused Content Below:

Golden Eggs

Intel Egg- This golden egg sprite has the Intel logo engraved in it. An Intel-themed Angry Birds game was made for promotion, with some of the levels appearing in the Android version of Angry Birds Seasons, meaning some levels were also planned to appear in this game aswell. It's possible to view the levels themselves by either replacing already playable levels with them or by enabling it from editing the LUA game code files. There are 5 Intel Golden Egg levels in total:

Level 1

Level 2

Level 3

Level 4

Level 5

Golden RIO Egg - A sprite for a golden egg with a star, with the movie name Rio engraved on it. It appeared when you finished the Golden Egg #22 level, replacing the star. But, as the level complete screen was changed, this went unused.

Intel Egg

Golden RIO Egg

Mighty Eagle

Even though the Mighty Eagle is exclusive to mobile devices, the graphics and sounds for it can be found. This suggests that this feature may have been planned at one point. At least Rovio has prepared us for it.

First-Time Use Screen

This screen (found in "data\images\pc" of the game's directory) may be what will appear when the player first clicks on the Mighty Eagle icon (in the main menu, or the Power-Up Shop). The roll of film with the Mighty Eagle's eye will most likely lead to the Birds & the Mighty Eagle video like most versions of the game. Notice that there's no icon to buy it (usually a shopping buggy), so the Mighty Eagle may be free to use.

Feathers and Unused Title

Most noticeably, in this sheet, is what appears to be the original name for the PC version, "Angry Birds HD". It was probably removed because the iPad version is called Angry Birds HD.

It doesn't appear in v2.2.0 PC. Found in MENU_ELEMENTS_2.png, (Not v2.2.0 PC) and MENU_SHEET_2.png.

The large feathers below it are the rankings that replace the stars when using the Mighty Eagle. For how much of the stage is destroyed by the Mighty Eagle, the black feather transitions to the colored feather by percentages. The small feathers on the right are for the menus. During level selection, the black feather is used for indicating a level with the Mighty Eagle used, which is under-layered by the colored feather, showing how much 'eagle score' is obtained.

Sprites

They have sprites for the Can of Sardines and The Eagle Himself in INGAME_BIRDS_2 File.

The Can of Sardines

The Eagle Himself

Unused Store Image

This image's name is "SHOP_NEW_ME_BG.png", so it might've been used in the store.

Demo Level

There is an eagle demo episode in \data\levels\eagleDemo. This is used in the mobile version as 3 tutorial levels for the Mighty Eagle in the shop.

Power-Up Buttons

There are also icons for the power-ups from Angry Birds Friends (aka Angry Birds Facebook), which include the shop images, as well as some placeholder graphics. They can be found in one file. Like the Mighty Eagle, these features never came to this version. There is also a lock button (iPhone retina Display) that is unused. That appears in BUTTONS_SHEET1

Unused/leftover sprites

Crystal Icon

Found in BUTTONS_SHEET_1.png (Or BUTTONS_SHEET_2.png), there is a hexagonal crystal icon. It is used in the iOS versions only for Crystal SDK in early versions. New versions use Game Center.

Unused buttons

Among all the button icons, there are a lot of icons which were not used:

• The "Play" button has been replaced with a simple round button with a play icon.
• The left arrow button with a corner shadow might be intended for use in the level selection, but the one without the shadow was used.
• Some social media icons will only appear in the game if used the Chinese, Japanese or Korean localizations.
• The ID card button icons were used only on the mobile versions, where you could save your progress online with a Rovio account.
• Ads never appear in the PC version. But in the mobile versions, you can purchase to remove ads. Hence, the "Get the latest ad-free version!" button sprite was not used.
• Red tied with a ribbon, which is present in the iOS version, serves as a button to share a free version of it.
• The crystal icon, again, but smaller.
• The trophy icon might have been for Achievements. Only present in iOS versions.
• The curved arrow icon and the curved arrow in the 'level select' icon was never used in any version. It might be intended as a return button.
• The blue button with hills will change the background to a static color, and will also remove all background images. This is only present in the mobile versions.

Test Sound

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Located in data/audio/sfx, a sound of a c minor note being played with an organ.

Golden Egg Level 12 Soundbox

While the first five birds and Hal were used, their 'hurt' sprites were never used along with Bomb's exploding phases, wide-mouthed Hal, and Terence. This was added in v3.1.0. (Interestingly, Bomb’s flying sprite and Terence’s sprites in the 2022 remake of the game were recycled from this sheet.)

Bad Piggies Promotion

A sprite-sheet for the Bad Piggies promotion. This is supposed to be animated. This was added in v2.3.0.

Origo

This pair of arrows were included in the birds and pigs' (INGAME_BIRDS_1) sprite-sheet, and are likely a leftover from the developer kit (a.k.a Editor Mode). It is also found in the files for Angry Birds Trilogy.

It can be seen in this video at 4:25.

Red's special (Mighty Feathers) activated

Red's sprite when he uses his ability. In Chapter 9, Red gets a special ability. While it does show up in the tutorial screen, this never shows up when used. This is also used in (INGAME_BIRDS_1).

Sticky Block

Sticky Block is an unsused block in AB Classic, found in the INGAME_BIRDS_2 sheet. The block makes other blocks bounce from it, and it makes the birds stick to it.

Unused Blocks

Some weird block sprites are present in the blocks sprite-sheet that were never used in-game.

• The golden American football might have be used for Golden Egg #22 as it was a Super Bowl surprise. But, as this specific egg didn't use any sprite to seem invisible to players, this sprite was never used.
• Two different types of terrain, a wooden stage, and an ice rink.
• Two bent planks that are each painted with a different color.
• A brass tray.
• A sideways metal pole that might be for a sideways flag.
• An ice platform. It was used in Angry Birds Seasons as a static platform.
• "Golden" sprites of the first 6 chapters' level complete items, and a King Pig for some reason. A golden item might be planned for each episode, but was scrapped for some reason.
• A puzzle piece (Again).
• Also In Retina Display (Or iPad 3 & newer) (And v2.2.0 to v3.3.1), the Mighty Hoax block is supposed to be the Chrome sprites.

Debugging functions

In the game's asset directories, there are Lua files for debugging the game. Some debugging code is also present in pre-existing Lua scripts not titled as debugging features. These are shown by the game's build settings in options.lua.

Build settings

• releaseBuild: Retail, clean build. Turning off makes the game act like debugging build, enabling debugging functions and some screens have debugging information like the credits, defaulted to true. Some include debugging information in the credits, using a developer activation server and allowing the use of using all developer cheats on beta builds.
• showEditor: Shows the level and particle editors at the main menu, defaulted to false, due to some files that aren't present the game (until 7.2.0 which never released on PC before discontinuation), it crashes among toggling this setting while checking data/scripts/editor for editor. lua... maybe the files are present in an older version (v1.0.0-v2.0.0) or the ones from the current releases can be imported then this setting would be useful.
• cheatsEnabled: Allows the use of built-in developer cheats. False is defaulted.
• useDynamicAssets: Makes the game use assets from the dynamic script directory. False is defaulted.
• isPremium: Makes the game acts like a "premium" version, ads are disabled, false is defaulted. Has no effect on PCs due to absence of advertising and IAPs.
• isKorea: Makes the game act like a Korean build. False is defaulted.
• applyChinaRestictions: Makes the game act as a Chinese build. A timer is shown for game time left, false is defaulted. However, it can be replaced by localization.
• gameVersionNumber: The game's version number shown in credits. Changes after every update.
• customerString: OEM is based on how the game was acquired, commonly "rovio".
• svnRevisionNumber: Server revision number in last credits line. The number starting with RXXXXX isn't shown on PCs due to lack of online service support. However, it is shown if the game is a debugging build.
• isSeasonsAvailable: Makes the game advertise Angry Birds Seasons in menus. True is defaulted.
• g_registrationEnabled: Toggles the game activation DRM setting. True is defaulted.
• g_updateCheckEnabled: Toggles the game's auto-updater executable updater.exe setting. Defaulted to true.
• g_hasWebBrowser: Makes the game think you have a web browser to view ads. Defaulted to true.
• loadMightyEagle: Loads the Mighty Eagle assets. Enables the Mighty Eagle. True is defaulted, but due to lack usage of proper files, this doesn't do anything... This only works in v1.6.3.1.
• bingIsEnabled: Allows Bing usage in game.
• enableAssertions: Enables assertions.
• disableShopButton: Hides the shop from the game. On is defaulted.
• hasIaps: Allows IAPs to be made. Off is defaulted.
• g_is_free_version: Makes the game act like a free version. True is defaulted for demo, but when you activate full game (v1.5.1+), false is defaulted.
• useScaling: Toggles scaling settings.
• timeMachineServer: What server is used (for time). dev is defaulted.
• gameId: Short identifier for the game when clicking ads that log it. Defaulted to abc.
• g_separate_powerup_highscore: Allows power-up based high scores separately to be kept along with plain gameplay scores in a highscores.lua. False is defaulted.
• applyLocalization: Applies a predetermined localization.
• isHDVersion: Makes the game act like a iOS HD build, possibly shows HD sprites and textures if on. False is defaulted.

LUA Error Handler

If an LUA is modified incorrectly or calls something that has or causes errors, the game will show an error about it. The options are to ignore, abort, or retry. If the file is too major that is having the problem, the game likely will force you to exit/crash unless the file is fixed. If the game memory is modified based on bird counts, the game will show an error: Next bird not found! Please make sure all birds are correctly numbered for each level. Call stack: INFO...

Developer Cheats

If developer cheats are on, these can be used during gameplay.

FPS And Memory Display

A display on the bottom middle of the screen, for the FPS and memory in MB is visible. Show Fps is the internal flag name if using the you're using the Debug Console to enable.

Debug Console

A giant overlay for both logging and entering text, covering the entire screen, called and hidden by by Shift-D. It is possible to edit in-game flags and values for a session by using it, the same way for loading it on mobile releases (Right corner multi click). It's also a method to load on the PC version. Using @ in your entry will close the debug console after it is entered.

In-game

• C = Simulates a three star completion, ignoring the current score and using a predetermined score, the same way for using it on mobile releases (Left corner multi click). It is also a method to load on the PC version.
• PgUp = Previous level.
• PgDown = Next level, ignores level lock restrictions.

Elsewhere

• Backspace-Q/W/E/R/T/Y/U = Crashes the game, attempts to call powerups while PC version doesn't enable them or have the files.
• Ctrl-Alt-# = "#" can be 1 (English), 2 (French), 3 (Italian), 4 (German), 5 (Spanish), 6 (Chinese), 7 (Taiwanese), 8 (Japanese), 9 (Portuguese) or 0 (Polish). Attempts to change the text locale, setting a non-existing locale other than Japanese or English crashes the game...
• S = Toggle sounds on or off.
• Ctrl-F5 = Attempts to create a Lua file containing the layout of a screen. It crashes due to the folder layouts in the game data directory not existing. Manually creating it fixes the function to make a plaintext file.
• Shift-F12: Toggles mouse cursor visibility.
• Shift-C: Enables IAPs (doesn't work).
• Shift-Z: Powerup bundle reward (Crashes).
• Shift-X: Powerup slot machine (Crashes).
• F: Toggles visibility of the FPS and memory display.

Filesystem Differences

In the current Angry Birds versions, scripts alone is only present. On PC and old versions, scripts and scripts common are present. Certain DRM files are only present on the PC version of the game, but are mentioned in current versions. LZMA packing is used after v6.0.1, but the PC version beyond v2.0.0 maintained 7z encryption for containing assets, WAVs, OGGs, and MP3's are only supported. v1.0.0 used encrypted assets alone.

Leftovers from other versions

Achievement icons

Icons for achievements in iOS versions. It also has a sprite for an in-game dialog box, which was used for completing achievements in Angry Birds Trilogy.

iPad font

This image is located in \data\fonts\1024x768\FONT_MENU_IPAD.png. It is used to show the current level's number when the game is paused.

Mattel Apptivity

These files are for the Mattel Apptivity King Pig toy, which can be used to unlock special content in the iPad version. The King Pig sprites are used for level successes and failures. This content is now unlockable as of version 2.2.0 (v2.3.0 and newer if on iPhone, Android, MAC, and PC).

Mode names

Mode names in Japanese

King Pig emotions

These are some files from the toy's splash screen.

HD and free (3.2.0 and newer)

This image contains the used Rovio logo, and the words HD and Free. There is no free version of Angry Birds for the PC (the unlicensed version does not use "Free").

Toons.TV (also known as Toons)

This button links to Toons.TV in the mobile versions. It never came to PC.

Early Bird Designs

Red (f.k.a. George)

Red had a completely different design. Also, his name was going to be George.

Beta Design

Terence

Terence originally had more similarities to Red (as they were brothers). This design was likely altered because Terence and Red looked too similar, and Rovio wanted to make Terence more distinct from his brother. It was also originally present in the level selection screen of The Big Setup before it was changed in an update.

Early Design And Color Scheme

The Flock

Originally, there were going to be 6 different birds; those being the "Grenade Bird" (Matilda), the "Purple Bird" which is completely unused (not a prototype Terence), Grey Bird (Bomb), a round yellow bird (Chuck), Red, and The Blues. In the final version, there were only 5 Birds in 1.0. Also shown are concepts for Hal's design.

References

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Main article | Gallery | Beta elements | Credits | Glitches | Version history | Achievements | Re-releases (Lite, Lite Beta, Free, HD Free, Free with Magic, HD, PSP, Island, Roku, Sync, Trilogy, Samsung Smart TV, Kakao, China, Hatch, Time Travel, Tencent QQ, Talkweb, Rovio Classics (Automotive))
Playable characters		Angry Birds (Bomb (Shockwave), Bubbles, Chuck (Chuck Speed*******), Hal, Headshot*****, Lady Grant*****, Matilda, Missy Golocrest*****, Red (Mighty Feathers Red, Fire Bird*******), Reporter*****, Senor Redshank*****, Stella, Terence, The Blues) | Minion Pig | Small Pig | Jetpack Pig | Bomb Pig | Bowling Ball Pig | Toucan Pig | Fat Pig | Balloon Pig | Female Pig
Non-playable characters		Col. Angus | Darude | Grenade Bird******* | Grey Bird******* | Mechanic Pig | Mighty Eagle | Ross | Rhinoceros | Postman Pig | Purple Bird******* | Hand****** | Hatchery Bird*****
Enemies		Corporal Pig | Egg | Foreman Pig | King Pig | Leonard | Minion Pigs
Episodes	Normal	Tutorial | Poached Eggs | Mighty Hoax | Danger Above | The Big Setup | Ham 'Em High | Mine and Dine | Surf and Turf | Bad Piggies | Red's Mighty Feathers | Short Fuse | Flock Favorites | Bird Island | Piggy Farm | Jurassic Pork | Birdday Party (Birdday 5) | Golden Eggs | Bonus Levels*** | Magic**
	New World*	Happy New Year | Naughty Christmas | Lunar New Year of the Golden Pig | Wandering Planet | Summer: Back to the Beach
	Classic World*	Year of the Goat | Moon Fest
	Other	Power-up University | Mighty Eagle University | Red Saves Lives | Mighty League Test Levels | Bubbles Level
Items		Coins | Egg | Gems | Golden Egg | Power-up (Birdquake, King Sling, Power Potion, Score Doubler*, Mighty Eagle**, Shockwave, Sling Scope, TNT Shield) | Sardine | Slingshot | Lives****
Gimmicks and obstacles		Balloon | Beach ball | Cake | Cardboard cutout | Dice | Gift | Glass | Greek pillar | Potion | Stone | TNT | Treasure chest | Water* | Wood
Modes		Challenges***** | Daily Challenge (Angry Birds Time Travel**) | Golden King Pig | Hatchery***** | Level Editor | The Mighty League
Music	Albums	Angry Birds (Original Game Soundtrack)
	Tracks	"Angry Birds Theme"
Other		"Angry Birds Cinematic Trailer" | "Angry Birds & the Mighty Eagle" | "Angry Birds Bing Video" | "Bomb Bird: Short Fuse" | Box2D | Destruction gauge | Earth (Bird Island (Bird Island Beach, Eagle Mountain), Piggy Island) | Level Failed | Piggy kingdom | Rovio Account | Star | Angry Birds: Hatching a Universe | Winnable Objects
*Appears in the Chinese version only **Appears in Angry Birds Time Travel only ***Appears in Angry Birds Trilogy only ****Appears in Angry Birds for Kakao only *****Appears in Angry Birds Island only ******Appears in the PC version only *******Unused