I spent about 2 hours
Sitting here playing this game, it is incredibly addicting and fun. The diverseness in monsters made me enjoy the game twice as much because you didnt know what would bring down which creature. Everything simply came together at the end of the day, didnt it? :)
If there was one pet peeve I had with this game it would be that the creatures that recover seem to do that to fast. I could have maybe 3 towers on one of the "bat" looking monsters at a time and it could out-heal my attacks. Other than that though I couldnt stop playing.