Here is a list of blockers in the game. The usefulness will determine whether the blockers helps the player to progress in the gameplay or not. Hitting non-useful ite will count as an invalid move (unless the bubble is the some color as others next to the item) & will cause streak to break & reset to x0. Hitting useful it won't count as an invalid move.

Blocker name Image Useful? Description
Glass Not useful Glass is fragile, hit it once to break it.
Wood Not useful Tougher than glass. Takes two hits to break.
Stone Not useful Stone is impossible to destroy it. However, it can be done by using Red's Rock Pop, Bomb's Blast Pop, Fireball or Crusher.
Blitzfruit Useful Destroys a horizontal row of bubble and drops objects below it.
Smoke Cloud/Cloudy Bubble Not useful (Unless the bubble under the Smoke Cloud matches with the bubble that hit it) It hides the bubbles and hit it reveals underneath the bubble.
Splash Fruit Useful The bubbles around it are changed to the color of the next bubble
Bomb Fruit Useful Clears surrounding area of bubbles.
Honeycomb Not useful It blocks the bubbles from making a match. It will reveal the bubble underneath if was matched near it.
Lava Bubble Not useful It sprays ash bubbles.
Ash Bubble Not useful Hit it twice to break it.
+3 Bubble/Bubble Pod Useful It will give you 3 more bubbles (+3) when hit.
-3 Bubble/Picker Pod Not useful It will take away 3 bubbles (-3) if hit.
Boomshroom It will spread spores that block your way when hit
Spores Not useful Remove them by hitting them with a bubble
Pop Fruit Useful Clears all the bubbles of a same color on the screen once hit
Power Flower Charges every time a move is made, and eventually shoots out goods
Sandstorm Not useful Bubbles covered in sand storms can't be matched. They will move away once a match has been made next to them and has to me matched multiple times to get destroyed
Spike Not useful Destroys your bubble
Drum Unknown since bubbles don't stick to them Bounces bubbles in another direction
Fizz Fruit Useful Pops a vertical line of bubbles.
Spin Fruit After each shot, this bubble will spin randomly and when hit, it will change all bubbles in that direction to the color of the next bubble
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