For the steam games thing?? I really like Games where there's a butterfly effect, or are old-ish looking? Like like Undertale or Ib and other games similar. I also like puzzle games and multiple endings! What would you reccomend?
Creepycute retro puzzle games with complicated solutions and multiple endings? Have a look at Mystik Belle. It’s one of the relatively rare examples of a modern indie game that goes for the Super Nintendo/Neo Geo aesthetic and does it well, and the gameplay is a fascinating little crossbreed of Metroidvania-style platforming and exploration and adventure-game-style inventory puzzles.
It’s not super-challenging, though it does suffer from a few conspicuous annoyances - most prominently, that there are dozens of different items that can be involved in puzzle solutions, but you can only carry like five at a time, so you’ll constantly be backtracking for lack of inventory space. The platforming in the early game can also be very fiddly, until you’ve picked up a mobility powerup or three.
On the plus side, at various points you get to duel a Science Ninja, play with unlicensed explosives, and - if you play your cards right - punch out Cthulhu. What could be better than that?
(No major content warnings to speak of. The visuals are sometimes a bit gross, but nothing beyond what you’d expect to see in a moderately creative Hallowe’en decoration. There’s a bit with a werewolf that might give you a bit of a squick if you’re very sensitive to body horror.)