This game is awesome. The iPod Touch version is better because you can upgrade the rate of fire, ammo clip, etc, on your guns. You can also buy upgrades before matches like one it costs a few hundred dollars but it gives you 10 sentry guns.
It would be nice if you were able to choose your starting critter. Like have 6 eggs- male and female bird, male and female lizard, and male and female fish. I really want a male lizard and I keep abandoning game and refreshing until I get one!
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 "SAS: Zombie Assault 3"){kind=icon}
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 "Critter Forge"){kind=icon}