Orbital takes simple gameplay and dresses it up with a unique “gravity” feature and enhanced graphics. The game can be very frustrating at times, but that won’t keep you from coming back for another try.

If you’re looking for a unique game with accelerometer controls, give this a look. But expect some control issues.

Physics + puzzle = iPhyzzle. This challenging game’s simplistic concept hides a devious interior, with gravity at its core. Nice visuals, added to gameplay value, complete the iPhyzzle armoury.

Gravulous is a space themed hybrid of pool and marbles with planets as your playing pieces. However, in the middle of the Newtonian planet-cracking gameplay, a relativistic entity, the Gravulous, is waiting patiently to take advantage of even your smallest mistake.

Aqua Forest by HudsonSoft is a different kind of application — part puzzle, part physics experiment, but all fun.