Every year there is a jam on Itch to make a first person grid based dungeon crawler. Sadly, this year is already done, but there are some fun stuff to play.
My favourite this year is Y2K Crawler, made in Godot and playable in the browser. https://wookbee.itch.io/y2k-crawler
Check this cute firewall
oh, that is a great game! I think I remember that. I am still afraid of the enemies.