It's an "Open Vibe Code" project - I won't be accepting any PRs, instead, open an issue https://github.com/atomic14/harmless/issues and I'll point claude at all the issues periodically and see what it does.
The current game is very playable right now and has quite a few features. Push '?' to get the keyboard layout. Classic Elite was very keyboard heavy - it you played it when you were younger it will feel very familiar. If you've never played it... you'll pick it up soon enough!