games with upgrades

[EventHorizon]

Ive noticed that the games i really love are ones that i either have to beat my own highscores or have a crapton of awesome upgrades. I've had a hard time finding some of the latter though. Ones i've found to be addicting:

clash of clans
zombieville 2
battleheart
Kinda sad huh? I can find ones with upgrades, such as random heroes, but they just aren't addicting. Any the TA community know of that i don't?

[Pocketnova]

Fangz is an awesome game like zombieville. I would recommened that for sure.

[Vector]

Minigore!!!!