Sokoban in pure static HTML, vibe coded.
This uses accesskey to support keyboard input. The exact key combos are system dependent. See MDN for how to trigger movement keys in your OS and browser.
For more levels, see these small Pufiban levels, then run perl gen.pl.
Larger levels would be possible if the server handled the game logic, non-pre computed, with the client still pure HTML. But this would require a backend.