My current favorite is Cartoon Wars - Gunner. It has tons of content and upgrades to keep you playing for hours.
Zombieville; Mummys Revenge; Anger of stick and OMG pirates are all really good ones you dont have there yet
Cartoon Wars Gunner. Just because ofthe upgrades and tons of weapons its a mustbuy while its still a buck. Also, Coloseum. Its actually a slasher, Zombieville-style....and its awesome.
Hence him saying "just because of the upgrades and tons of weapons" and not "just because of the awesome controls".