Fun
Very fun, albeit frustrating :) But that is how good games are supposed to be.
I'll just echo everyone else - you should be able to beat the game on nooblet.
Love the idea, strategy, towers, etc. I've played it about 6 times now without beating it. I'll get to level 53 or so and then everything freezes, so you can't react, and then all of a sudden, ya lost.
I'm not on a shitty computer either. Dual core 2.4 ghz w/ 4 gigs ram and my computer freezes after wave 50. Something to think about. Thanks for the game.