Gems

Good concept, can be quite addicting (in a good way). Some small movement inconsistensies bug me. For example
- - 2 2 press left: 4 - - - ;
2 2 - - press right: - 4 - -
Also, I think the game should detect when I lose (no move possible). Otherwise, this is a great procrastination tool.

Fun game! ...until you can't move... and you can make excruciating sounds by tapping randomly about.

Really fun but there should be a final score screen once there are no more possible moves!