SET AND RUN

One board. Thirty rounds. Nothing ever comes off it.

Every round you are handed exactly one part — a conveyor, a springboard, a blower, a bumper, a block, a brake — and shown one target. Put the part anywhere, press GO, and watch the ball fall. Hit the target and that part is inked onto the page for good: it will still be sitting there twenty rounds later, helping you or blocking you.

The board is never cleared. So the puzzle you are solving is the machine you have already built.

How to play

• Tap a cell to place the part you were given
• Tap it again to take it back, or tap another cell to move it
• Tap GO to drop the ball
• Three misses and the run is over

Two ways to play

• NORMAL — 30 fixed rounds. Everyone gets the same thirty puzzles in the same order, so they can be learned and beaten.
• DAILY — the board, the parts and the targets are shuffled from the day’s seed. No ending: see how far you get.

The parts

• BELT > / < BELT — carries the ball sideways
• JUMP — bounces it high
• FAN ^ — pushes it up while it passes through
• BLOCK — fills the cell and cuts the path
• BUMPER — kicks it back the way it came
• STOP — kills its sideways speed, so it drops straight down

Every round is checked to be solvable before it is served, so you are never handed an impossible puzzle. Works in the browser, no install, portrait screen.