Tap a block and it shoots straight out along its own arrow — unless another block stands in the way. Find the right order and empty all eight boards against the clock.
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Every block carries an arrow. Tap it and it slides along that arrow, straight off the edge of the board and out of the puzzle.
If anything sits on the path, the block just bumps and stays put. The block in its way flashes red, so you always know what to clear next.
Up, right, down and left each get their own bright colour, so you can read the whole board at a glance instead of studying every arrow.
Each board is built backwards from a complete clearing order, so a solution is guaranteed - and removing a block can never dead-end the puzzle.
Boards grow from 3x3 to 7x7 and the timer never stops between them. Your score is the total run time, down to hundredths of a second.
Clear all eight and submit your total time. The fastest runs rank first, and your personal best is also kept on your own device.
Every block points somewhere. That arrow is the one and only way it can leave the board.
It slides out and disappears. Nothing is ever lost - removing blocks only opens up more paths for the rest.
Tap a blocked block and it bumps in place while the block in its way flashes red. Clear that one first, then come back.
When the last block is gone the stage is cleared and the next board drops in - the timer keeps running the whole time.
Stage eight ends the run. Send your total time to the world leaderboard, or start a fresh randomly generated set of boards.