Tetris meets falling-sand physics.
Need help or have feedback? Email shii.makino@genit.jp and we'll get back to you.
Shape the glowing tetromino as it falls — the instant it lands it crumbles into thousands of sand grains that pile up with real physics. Grow a connected mass of one colour past the match threshold and it collapses in a burst.
| Move | Drag left / right on the board |
| Rotate | Tap the board |
| Soft drop | Slow drag down |
| Hard drop | Flick down |
| Hold / swap | Tap the HOLD panel |
| Specials | Tap a power in the neon dock |
| RAIN | Pours the board's dominant colour from the sky to help finish a clear. |
| CLONE | Copies the current piece into NEXT so you can pile the same colour. |
| SHAKE | Jolts the board so steep piles collapse and merge. |
| VACUUM | Sucks the top band of sand into a vortex — an emergency clear. |
How do I lose? Watch the hourglass meter on the left. If sand chokes the spawn corridor, the run ends.
Does it need internet? No. Sandtris plays fully offline and collects no data — see our Privacy Policy.
Is my progress saved? Yes, locally on your device.