Gem Cascade

How to play

1. Swap two neighbouring gems to line up three or more of a kind; a swap that makes no line slides back.
2. Drag a gem onto a neighbour, or click (tap) one gem and then an adjacent gem. On a keyboard, move the cursor with the arrow keys, press Space or Enter to pick up a gem, then press an arrow to swap it.
3. Each gem cleared scores 10 × the chain: the swap's own match is chain 1, every cascade wave after it adds one.
4. Match 4 in a line to make a Line gem (clears its row or column), an L or T shape for a Burst gem (clears 3×3), or 5 in a line for a Prism. Swap a Prism with any gem to clear every gem of that kind.
5. Moves ends after 30 swaps; Timed Rush ends when the 90-second clock runs out (Line +2 s, Burst +3 s, Prism +5 s). Zen has no limit.
6. In Moves and Timed Rush, fill the gold bar on the frame to earn up to three stars. After 6 seconds idle a hint glows.
7. Your run is saved after every swap: close the tab and press Continue to pick it up again. Press ? for help.

Controls

Keyboard

• Drag a gem onto a neighbour — swap
• Click two neighbours — swap
• Arrows — move the cursor
• Space / Enter — pick up a gem, then an arrow swaps
• ? — how to play
• Esc — pause
• M — mute

Touch

• Swipe on a gem — swap it in that direction
• Tap two neighbours — swap
• Pause button — pause
• ? button — how to play