How to playThe board is 25×25. Press Start game so the page can receive the keyboard, then use the arrow keys to turn. Eating food makes you longer. Score is 10 points per segment beyond your starting length, and speed increases with the same growth (capped). Hitting a wall, a barrier, or your own body ends the run.

Difficulties

• Easy — Open board, no barriers.
• Medium — Random gray barriers; all empty cells stay connected (no sealed pockets).
• Hard — Same as Medium, plus a rival snake (magenta / gold). If its head hits your body, it disappears and you absorb its length (score and speed follow as you grow); a new rival spawns at your current length. If your head touches its body or head, you lose.