Very nice concept, but a game with so much randomness can't get a 5-star rating...
Tweak spawns to make sure there's always a reasonable path through the flying objects and the game will be a lot more interesting.
The game IS simple on purpose. This is a one-developer, spare-time roguelike, and I wanted to project to be closed and finished at some point. Being overly ambitious would not have afforded me that luxury.
Good game, but the extra options (rotate, crush) really take away from the fun, rather than add to it, I think.
More than one song would be nice.
Finally, there's way too many fives and sixes. When you have a layer of those on every side, there's just not much you can do.