Stack the light. Clear the dark.
A free browser game. Keyboard, gamepad or touch. Sound starts on your first key press or tap.
Four-gem pieces fall into a ten-wide well. Fill a whole row and it dissolves into light. Reach the top and the run ends.
Tap to rotate. Drag sideways to slide the piece. Drag down to soft-drop. Flick down to hard-drop. Flick up, or use HOLD, to stash a piece. TURN rotates the other way.
D-pad or left stick to move and soft-drop. B turns clockwise, A counter-clockwise, Y hard-drops, bumpers hold, Start pauses.
Bigger clears score more. Clearing four rows (a QUAD) or any T-SPIN is a "hard" clear; chain them for back-to-back (B2B) x1.5. Clearing rows on consecutive pieces builds a combo. Wipe the whole well for a PERFECT CLEAR. A T-spin means rotating the T piece into a tight slot at the last moment.
Press the restart key twice to abandon a run and start over (once shows a confirmation). It is rebindable in Settings.
The piece flashes brighter as its lock timer runs down. Moving it resets the timer, but only about fifteen times.