Click a gem to select it, then click a neighboring gem to swap them. The direction in which the first gems moves will affect the gravity of the board.
Form chains of 3 or more gems of the requested color to advance a progress bar; fill the bar to win the game and get a score multiplier. Do so in a limited number of turns or you lose the game. Forming chains of 4 or 5 gems will give you an extra turn.
Each removed gem gives you mana in the corresponding color. Click the spell icons to trigger powerful effects.