Merge Together is a fun puzzle game for iOs, developed in Unity. The aim of the game is to merge together (lol) all of the blobs of the same color. It seems fairly easy at first, until you close in on the final combinations, possibly requiring a radical rethink.
The game uses an innovative custom graphics shader which renders 8 simultaneous layers of realtime metaball blobby-objects in full resolution and at 60hz framerate. This is what allows the blobs to merge and un-merge so smoothly. And it runs smoothly on iPhone and iPad.
This game is currently not available for download but was recently available on the iOS app store. Some aspects of the game are being redesigned to improve the gameplay before re-release.