I don't see why everyone is saying this game is so easy. When you get to the last few days and you have bad guys swarming all 7 floors, you can't sit back and relax. I know I didn't.
Okay, maybe this is only happening to me... whenever I die and hit 'retry', almost none of the buttons work. I can only move around, I can't fire or switch weapons.
I find this Catch to be very relaxing. I love the music with it, I'm definitely getting that album. It's a nice, simple game with enough variety to keep you coming back.