I used to play Dungeon Defenders on my phone until it was retired and liked it. Beat Hazard: http://www.androidpolice.com/2012/12/03/game-review-shoot-em... Super Hexagon: http://www.androidpolice.com/2013/01/19/new-game-terry-cavan... The other games are debuting their android versions but the iOS originals have positive reviews.