Great idea. But it feels half-finished.
The controls are great. The simplistic geometric tank designs fit perfectly. The sound effects are good. The powerup system is good.
Overall, this game is a blast.
HOWEVAH......it has 3 cute problems.
1.) There's no real stages. After defeating the easily killable Queen Hexagon, the game just kinda dies. Also, the stage being square gets boring. Seriously, with physics as good as these, DUDE, you can do so much. Crazy obstacle courses, or even having these little hexagonal dudes racing. Its so open ended, but the lack of stages really closes it off.
2.) Needs more enemies. The square guys are dumber that a sack of rocks. The red guys are a bit more clever, but they are mostly just clingier grey guys. You know what'd be sweet? Enemies who move as fast and shoot as fast as you. Little assassin hexagons. Or guys who explode if they touch you.
3.) MUSIC. ARGggghhhbblllaaffggrabl
that is all. I wish you good glorp.