A million years ago, there was a website that had a maze like this where the doors led you to various games. One of them was a PvP Pokemon-inspired creature battling game that I remember actually being pretty fun.
If this rings a bell to anybody and they recall a name, let me know. One of those cool experiments from when people were imagining different ways the web browsing experience could work.
Wolf3D
Had the same vibe!
Probably made with the same rendering technology