Diamond Twister is a match-three puzzle game set in a world of crime where the player steals diamonds from various locations around the world. The game uses the traditional Bejeweled formula with the player having to clear gems from the board by creating matches of three or more of the same kind. For every cleared gem the player gets a cash reward and to complete a level a certain sum has to be reached. Levels are on time and have to be completed before a fuse burns out. Matching combos or more than three gems leads to special pieces being cleared. These can then be matched with other gems and used to remove all gems of a kind or a full row.
The game contains a story mode which is made up of eight environments with several levels in each. By playing through the story mode more game modes can be unlocked. This includes an endless mode, a mode where letters have to be revealed and one where a magical stone has to be found behind the tiles.