Super Metroid because it’s amazing, and Castlevania Symphony of the Night for the same reason. I may be biased because those are two of my favorites ever but I swear they legit hold up.
I don’t know how much is truly infinitely replayable outside of tetris, but for what it’s worth I have 250 hours into dead cells and I still haven’t beaten 5 cells or even reached the final biome. You’ll definitely get replay value out of it, the game is fantastic.
Replaying Control again, having a hard time trying to pass a level of the Foundation, so I’m progressing in the story right now and I’ll go back to it later
I’ve been playing the Star Ocean 2 remake, I’m nearly through it. It’s been a lot of fun, definitely worth picking up if you have any nostalgia for the game!