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Sand physics puzzle

Draw a line, steer the sand.

Sand keeps falling from above; you draw lines with your finger to guide every grain into the cup. 500 levels, 10 worlds, one finger.

Play in your browser App Store Coming soon Google Play Coming soon

The web version is free: no download, no account, no ads.

Gameplay: sand pours from the nozzle and slides along a drawn cyan line into the cup

How to play

  1. 1

    Sand falls

    Sand keeps falling from above. Every grain falls, slides and piles up.

  2. 2

    Draw your line

    Draw a line with your finger and the sand slides along it. Each line you draw shows its result instantly.

  3. 3

    Use less, earn more

    Both your lines and your sand are limited: the less you use, the more stars you earn.

Powers

Five powers help when you get stuck: pick them before a level, use them with a single tap in play. You earn gold by finishing levels.

  • Hint

    Shows the first half of the route.

  • Undo

    Removes the last line, sand comes back.

  • Slow down

    Half speed for 8 seconds.

  • Freeze

    Mechanics stop for 5 seconds.

  • Extra sand

    Pouch +25%, the round continues.

Screenshots

500 levels, 10 worlds

New mechanics appear as you move through the worlds: water wheels, gears, wind fans, magnets, portals, pistons, ice ramps, gravity orbs and more. Each one changes the path of the sand and makes you rethink the solution.

  1. Levels 1–50The Shores
  2. Levels 51–100Wind Valleys
  3. Levels 101–150Lost Mines
  4. Levels 151–200Frozen Lands
  5. Levels 201–250Crimson Desert
  6. Levels 251–300Ancient Forest
  7. Levels 301–350Clockwork City
  8. Levels 351–400Sky Islands
  9. Levels 401–450Golden Temple
  10. Levels 451–500The Core

Game modes

  • Journey

    A 500-level campaign with three stars to win on every level.

  • Daily Challenge

    Everyone solves the same puzzle on the same day.

  • Endless

    Beat your record and push your limits.

  • Real sand physics

    Every grain falls, slides and piles up. A short, clever line beats a long detour.

  • Leaderboards and badges

    Climb the global and country leaderboards and collect badges. No account needed; a nickname is enough.

The GRAIN logo and a pile of golden sand on a seaside rock

Draw your first line now

Play in English or Turkish. The mobile app is coming soon to iOS and Android.

Play in your browser

The mobile app is free to play and contains ads. A one-time "Ad-free" purchase removes interstitial ads; rewarded ads are always optional. Optional gold packs are also available as in-app purchases.