Claim space
Leave the safe edge, draw a closed route, and flood-fill reclaimed territory back into the grid.
Draw closed grid cuts, avoid bouncing enemies, and reclaim enough of the board to clear each level.
Leave the safe edge, draw a closed route, and flood-fill reclaimed territory back into the grid.
Your active trail is vulnerable until it reconnects, so every shortcut has a cost.
Each level adds another enemy, making the same clean rules sharper and faster.