Huge Subnautica fan! But Spore, Slimerancher, & Barony- are some of the few games to start me on steam. All great games to suggest~
More Suggested:
Valheim - Great music, great design, simplistic yet hard. 11/10. Love chilling, building, and exploring!
7Days to Die - Creepy yet fun to search, sneak, and hoard!- All to survive a hoard!
Kingdom: New Lands/Two Crowns - Side scroll-er, very simple, relaxing, semi-strategic, pretty~.

Oh yeah, I'm also 'the' IrisSonata whom had/has created "Undergale": a lowbie Undertale AU. Gale, Typhyrus, and V. Gaster are my most known and drawn characters atm. Check me out on DeviantArt "IrisSonata"~