How do I make a connecting match-3?

I updated the last example that visualizing possible swap chain. Shuffle mechanic will be added later.

alextro It has been a while, but how do I recalculate the blocks removed by other means? (eg. powerups)

I added a powerup system similar to Paint Monsters into your base, and it works. However, directly removing blocks will causing the engine to mess up.

Tetriser You can't just destroy the block without setting it's boolean and global "state" variable. Set boolean "pick" to true & global variable "state" to 2. Whenever the block collide/overlap with your power ups, just set them so.

Tried it but it didn't worked. Am I did it wrong?

Uploaded the project for you to inspect: drive.google.com/open

How does the power up suppose to work? By clicking over it and the bomb explodes? You see to make the block destroyed you need to make "pickingcount" at least 3. In the bomb case it yields picking_count equal to 1, which is will canceling match mechanic due to "pick" boolean set back to false.

Let me explain. Inverse condition "delete" ("vanish" in my original file) boolean is missing in subevent under "state = 2". There is a reason not to remove it. Wait time for BombRadius were too short. Set it to 0.1s instead of 0.01s so the bomb has enough time to overlap with blocks. For the last step simply put "Powerups" group and it's event outside condition "state = 1) aka make it non-sub event.

Here the revision for your case:

drive.google.com/file/d/1g14XMJbcMrYTBGXCBmAng0piznm_92Aa/view

Ah, that solves the powerup issue. Thanks for your help.