Hill Climb Racing for iPhone
There are plenty of fancy iPhone games with all kinds of advanced graphics and engines. Hill Climb Racing may not have the craziest graphics but can keep you entertained for a while. This physics based driving game comes with fun hill climbing environments for you to try. As you play it, you earn coins to upgrade your car.
The game comes with smooth physics. It has upgradable cars and a garage mode. The Hill Climb Racing app is available for free but you can always buy coins to have more fun.