Trism

Trism is a casual gem-style puzzle game for Apple's iPhone, available from the iPhone App Store. Developed by Demiforce, Trism incorporates the iPhone's built-in accelerometer into the gameplay. Trism made Demiforce's founder Steve Demeter over $250,000 in the games first two months of availability. Priced at $4.99, the game was introduced as one of the applications released on the initial launch of the App Store.

Trism users are offered five separate gaming modes including classic, timed and puzzle mode. Users must gather gems into groups of three or more, using the iPhone's six-axis accelerometer to direct the angle in which the rowed gems will fall. The game is playable in both normal and landscape mode.