Advice for ipad/iphone games?

So my grandfather got me an ipad (4th gen retina display) for graduation and i'm trying to find some games to put it on but i've never used an apple product so need some advice for some games? I'd prefer free ones but feel free to put priced one's also, additionally my preference in games is strategy/rpg/simulation, really wanting to get a game that is like a pick your own adventure sort've thing with decisions and what not. Also looking for a game like cartoon wars or city builders. I really hate games that depend on purchasing additional items with real money and games that require you to play every 5 minutes or play with your friends such as farmville, mafia wars, etc.

Clash of clans

Grand Theft Auto 3, Dead Space, Mass Effect, Touchgrind Bmx, Injustice, COD Black Ops, Need For Speed Most Wanted, The Dark Knight Rises.

Kid, this is your lucky day. Iv'e had a smartphone since the first day they were released. And I'm gona give you some kickin' *** beast games with graphics as good as Xbox.
Racing games:
Asphalt 7
CSR racing
need for speed: most wanted
Real Racing 3(free for a limited time)
Real Racing 2
Illegal Racing
Asphalt 6
Driver
All the racing games are in 3D!
War games in 3D:
Modern combat 3
modern combat 4
gangster rio
Rivals at War
Tiny Troopers 2
CM swat
Fighting games:
Real Steel( a favorite movie! )
Free roam games! My favorite!:
Grand theft auto 3
grand theft auto vice city(yes, GTA is actually on the app store!)
Gangster Miami
Call of Duty: Zombies

Little Big City, Plants vs. Zombies, Dungeon Hunter series, Age of Zombies, NinJump, Real Racing series, The Sims 3, Tetris, Shadow Gun, Dead Trigger, Zenonia series, etc.

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