DropPix by AtkinsSJ 2013-05-02T15:57:00
A solid entry. One simple game mechanic, as the "Minimalism" theme suggests, dictates the whole game. I like puzzle games for exactly that reason, and actually believe that it's more difficult to come up with a solid puzzle game than with some already established video game genre.
The game plays well, it's all wonderfully clear. No spectacular graphics or sound, but this isn't needed anyway. Except from one minor glitch (I sometimes had to move the frame a little to make a button clickable again), the game ran very good and responsive.
What I believe your game lacks are puzzles - the supplied puzzles aren't as challenging as your gameplay idea could allow for. Should you wish to continue developing it, you'll have plenty of time to come up with great puzzles (I guess LD really is too short for these things).
Or maybe you could add a puzzle generator. I don't know how easy it is, but it might work with the following two rules:
1: Shoot tile adjacent to another tile.
2: Prefer a "shooter" that places the tile so that it creates empty space between itself and another tile.
It's the empty space between tiles that makes the game difficult, as it restricts plain stacking. This was evident in your last stages, with especially the last one being rather entertaining to solve.
All in all, a solid, focused and quite polished entry, that already offers everything it needs to improve itself with a few more maps.