The rules
- The board is a grid of dots. Arrows are lines running through the dots, with a head at one end.
- Tap any arrow. It moves head first: the head goes straight the way it points and the rest of the line follows along the same path, like a train on rails. The bends of the line do not matter, only the direction of the head.
- If the straight path from the head to the edge of the board is empty, the arrow leaves the board.
- If another arrow lies anywhere on that path, yours slides up to it, bumps, turns red and slides back to where it was. You lose one heart.
- You have 3 hearts per level. Lose all three and the level starts over: the same puzzle, three fresh hearts.
- Clear every arrow to finish the level. There is no timer and no move limit.
What counts as in the way
Only the cells on the straight line in front of the head, up to the edge of the board. An arrow’s own body never blocks it. Gaps and holes in the board’s shape do not stop it either. An arrow that has left blocks nobody any more: every arrow you clear makes room for others.
Hints
The Hint button lights up one arrow that can leave right now and draws its path to the edge. When it can, it picks the one whose departure frees the most other arrows. Hints are free and unlimited; the result screen simply shows how many you used.
Levels
The first three levels teach the rule without walls of text: a small board and a short line of help. After that boards grow up to 9×13 and the arrows get longer and more tangled. Every 10th level is Hard. Levels never run out, they are the same for everyone, and every one is guaranteed to be solvable: the generator builds each board in reverse and a solver checks it. Tips for hard boards.
Controls
| Action | Phone | Computer |
|---|---|---|
| Send an arrow | tap | click, or Enter |
| Cancel a press | slide your finger away | move the mouse away before releasing |
| Pick an arrow | — | arrow keys |
| Hint | Hint button | H |
| Restart | Restart button | R |
| Menu | back arrow at the top | Esc |
FAQ
Can the board get stuck?
No. An arrow leaving only frees space, so there is always at least one arrow that can get out. Order only matters for avoiding crashes.
Does it matter which free arrow goes first?
No. An arrow that can leave now will still be able to leave later, so start with any of them.
The next cell was empty, so why did it crash?
Because the blocker sits further along the same straight line. The path is checked all the way to the edge.
What do hints affect?
Only the hint count on the result screen. Unlocking levels and your streak do not depend on it.
