Spiritfarer is adorable, cozy and full of lovely characters but does pack a biiiig emotional punch and touches on some dark subjects. Keep tissues handy. But it's one of my favourite examples of when you can tell that a game has had tons of love and heart poured into it, it's very polished and thoughtfully made.

Subnautica gets another thumbs-up from me. It's definitely terrifying at times (I have a pretty bad fear of deep oceans in games) but you're eased into everything at a pretty good pace in terms of going to deeper depths/cave systems and you do feel better equipped and more confident as time goes on; you're never forced to go anywhere until you feel ready. It's got some really neat creature designs and worldbuilding and I didn't expect to get into the base-building as much as I did, but it's surprisingly deep and customizable.