One live bot — sixteen levels

One copy of the real 1988 game runs at a time. Pick a level tab to watch the gentle opening levels or the brutal back half — the self-moving levels where the snake grows roughly twice as long and every ♥ heart scatters a ♣ club into cleared ground. The bot paths to the nearest target, pushes ◙ stones, dodges ↑←→ arrows, keeps a route home to its tail, and will eat a ☺ smiley to avoid boxing itself in. Clear a level and its screen flashes green and advances; get stuck and it flashes red and restarts.

It's live, not a recording. Keep this tab in front — browsers throttle background tabs, which pauses the running game.