Robo Defense is the ultimate portable tower defense experience. Featuring open maps, upgradeable towers, stat upgrades, achievements, and nice graphics.

The free version features 1 map with 11 difficulty levels and if you like it, you can buy the full version which offers 40 levels of difficulty with three levels of map difficulty. If you like tower defense games, this one is definately worth a try!

Robo Defence for HTC Robo Defence qr