Do the cluster need to touch both walls to break? I think they fall too quick. I think the cluster need to be more smaller. I like the cluster mechanic it's real neat . Can you share a little bit on how you made the cluster mechanic?
That's right, you need to build a cluster in such way that it spans across the board and (nearly) touches both walls in order for it to break. I agree it's a challenge XD
Technically each blob is made of 4 sphere colliders. When they interact with blobs of the same color I create joints to keep them clumped together. The blobs' sprites are radial gradients rendered with a custom metaball shader and each group is assigned either Red, Green or Blue which keeps them separate.
Anyway, glad you liked it!