Trism is a puzzle game for the Apple iPhone developed by American studio Demiforce. The game and developer made the news for being a rags to riches story. The game makes use of the iPhone's built in accelerometer, and involves the sliding of colored triangular tiles called "" in order to make matches of three or more. As soon as a match is made, the tiles disappear and, depending on the direction in which the iPhone is tilted, the gaps left behind will be filled. Gameplay The game has been compared to Bejeweled 2, although the developer has stated the gameplay is unique, and there is a patent pending. Trism has four gameplay modes: Infinism This is the main gameplay mode in which the user slides the on the screen diagonally or horizontally in order to create matches of three or more ; the remaining gaps left behind are then filled by the surrounding depending upon the direction in which the iPhone is tilted. This is shown by the compass in the lower right hand corner. The more matched together the greater the number of points generated. Once a certain number of points is generated, the player then advances a level. During gameplay the player can encounter certain special , such as the locked , which prevents that are on the same axis from being moved until it is removed by matching it. There is also the bomb that has a countdown which decreases with every successful movement made. This can be moved but must be removed by matching before the countdown finishes or the game will finish. Terminism Terminism has the same basic gameplay as Infinism mode but with the addition of a timer. When the timer goes from green to red, called a timeout, a bomb or lock will spawn. In order to keep the timer green, matches must be made constantly. Unlike in Infinism, the bomb in Terminism is not counted on turn. It has a time limit. The bomb must be disarmed before it turns red, or the player will lose. Syllogism This is a puzzle mode whereby the player must eliminate all of the in the fewest moves possible. This is done by tilting the iPhone in order to make them slide. There are 30 levels each increasing in difficulty. Some of them are solvable under par with a total score of up to -17.