A hand along the way.

Follow the scene’s clues and touch the pale stones, valves, or mechanisms to restore the water. Some puzzles ask you to turn stones; others let you select two stones to exchange them. Connect the golden path between the floor seals. Dark riveted stones stay fixed.

Open Help for the current puzzle. Choose Show next move for guidance or Make this move to apply it. Use Undo to reverse a move or Restart to try the puzzle again. On a keyboard, use the arrow keys to choose a stone, Enter to select or exchange, and R to turn.

Use a browser with WebGL enabled. Reload the page, close other graphics-heavy tabs, and check that hardware acceleration is available. The opening needs an internet connection to load its assets. The installed iOS game bundles its game content for offline play.

Start the game before expecting sound; browsers wait for your first interaction. Use Settings to adjust sound and motion. The browser opening keeps progress and challenge records in this browser. Reloading keeps them; choosing Play again after the opening restarts its campaign. The iOS game saves progress on your device; it does not sync with the website.

The first ten campaign levels are free. One optional purchase unlocks the remaining 60 levels. In the installed iOS game, open Settings and choose Unlock full game / Restore purchase, then Restore purchases to recover an existing purchase using the same Apple Account. Internet access is required for purchases and restoration; installed gameplay and saves work offline.