Hello, I'm not the creator of hyper rogue, it is zenorogue if I'm not mistaken https://zenorogue.itch.io/hyperrogue
I'm glad you liked the game, my inspiration where mostly Antichamber and a game I saw in a festival but did not get released yet, De Pictura:
Also I started this project during a game jam (ludum dare) where the theme was "One room" so that made me think about how to use portals to make you loop in one giant room. You can still play that small game here: https://nusan.itch.io/non-euclidean-roomIf you like that theme, I recommend youtube channel "Code Parade" https://www.youtube.com/c/CodeParade/videos that has several videos around non-euclidean geometry and his even working on a game inspired by hyper rogue.
I would love to see games about curved spaces but I don't know many. I worked on ideas around that for a sequel of Fragments of Euclid, but unfortunately right now development is paused and I don't know if it will start again someday ...