This project appears to be vibe-coded; the game itself was added in a single squashed commit, but the author then used Claude for an extremely trivial "add a link to the bottom of the page" follow-up. The code for the game also has some comments that look pretty reminiscent of AI (e.g. describing the game board as being "validated", as in the LLM double-checked that it made sense).

As a game it doesn't seem especially well-designed. In particular the author has missed a key aspect of the original Pac-Man, which is that ghosts have to run back to the start when they're eaten and that gives Pac-Man time to freely move around and eat dots. Instead, getting eaten teleports both you and Pac-Man back to the starting positions and consumes a life. You get three lives, so it's way too easy to just tank two power pellets and then keep Pac-Man trapped in the bottom half of the level forever (aided by his not-great AI logic, as other commentors mention).

Personally, I found this take on the "Pac-Man but you're the ghosts" idea more interesting and less obviously plagiarized: https://youtu.be/96xNkL1Z_8M