Addicting games with in-game-store/upgrades?

Hey guys,

I'm searching for android games that are addicting, where you can buy upgrades for your character like in defender II, lair defense or temple run...so you collect coins or experience to gain upgrades...

so, has anybody got some games for me where you can buy upgrades that make your character or your equipment better.

would be nice if they hadnt got superb graphics (i dont want to get gameloft games or games with graphics like these) because i have got a low-end-device...

thx,
bvb09kingz

 

push...

Defender II, Cartoon Wars, Avatar Fight and so on...

has nobody got some games for me?