How to Play

Goal: arrange tiles in order (1,2,3…), empty tile at bottom-right.

• Click a tile next to the empty space to slide it.
• Use arrow keys or on-screen buttons.
• H hint · U undo · R restart.
• Endless: free play · Challenge: move & time limits per level.
• Practice: unlimited hints, no limits.
• Choose 3×3 (easy), 4×4 (medium), or 5×5 (hard).

Press ESC or click × to close and resume.