I (25 years working with GNU/Linux) usually name my bash scripts `something.sh`. I think it's debatable wether it's always good or bad, and when specifically it can be a good idea to leave out the `.sh`.

Also, it doesn't look like you looked into the game and came out with some conclusions. It looks more like you superficially had a look, you had a thougt and rushed to comment here about what you believe is a deadly sin. I personally never enjoy this kind of comment, as there's not much thought behind them.

I tried it (before recommending to a teammate) and I also noticed some things that could be improved. But it never crossed my mind to post a judgement on the project after trying it out for just five minutes.