Each level shows objectives under the score (for example, clear enough gems of a color or destroy crates). Complete every objective before you run out of moves.
Tap a crystal, then tap an adjacent crystal (up, down, left, or right) to swap them. Diagonal swaps are not allowed.
Or drag from one crystal toward a neighbor: the direction of your drag picks which side to swap with (orthogonal only).
A swap must create a match of three or more of the same color in a row or column. If it would not, the pieces snap back and you keep your move.
Tap the same piece again to deselect. Tap an empty slot to clear your selection.
Matched crystals are removed. New ones fall in from the top. Chain reactions count as combos for bonus score.
Line burst — match four in a row or column. Swap or activate it to clear that entire row or column (depending on how you swapped).
Prism — match five or more in a line. Clears all crystals of that color on the board.
Nova — matches that form an L or T shape create a blast that clears a wider area around them.
Crates are cleared by making matches next to them (each hit removes one layer). Some levels require destroying all crates.
Blocked tiles are gaps in the board; crystals cannot be placed there.
When you clear a level, stars reflect how many moves you had left — more moves remaining means a better rating.