Tap screws that nothing covers and fill the boxes with their colour. The tray holds screws that do not fit anywhere yet.
How to play
Back to the gameIn short
- Coloured screws hold plates on the table. Tap a screw to unscrew it.
- A screw of the box colour goes into the box, any other goes to the tray.
- A plate without screws falls and uncovers the screws below it.
Goal
Get every screw into a box. The level is complete when the last box is full.
Boxes and the tray
- A box has three places. A full box leaves and the next one arrives. You can see the next box at the top right.
- The tray has five places, four in some levels. When a box arrives, screws of its colour move from the tray into it on their own.
- You cannot unscrew a screw that a higher plate covers.
- When the tray is full and no free screw fits the box, you are stuck. Undo a move or start again.
Colours and symbols
Every colour also has a symbol: red a circle, blue a square, green a triangle, yellow a star, orange a diamond and dark blue a plus. The symbol is on the screw and on the box, so you never need to tell colours apart.
Levels and stars
Free play has 30 levels, each checked with a known solution. The next level unlocks when you finish the one before it. You get a star for finishing, a second for using at most two undos and a third for staying within the time limit. The time limit is shown above the board. You can undo three moves in each try. Start again puts the board back as it was.
Daily screws
Every day there is one new board, the same for every player. Your time counts from the first tap. Starting again does not stop the clock, and with equal times fewer tries win. Your first finished board of the day counts for the leaderboard, after that you can play for practice.
Controls
- Touch: tap a screw.
- Mouse: click a screw.
- Keyboard: pick a screw with the arrow keys and press Enter to unscrew it. Backspace or Ctrl+Z undoes a move.