Thank you for the wonderful list. Here are some other suggestions that I haven't seen mentioned yet. Apologies for not describing or linking to the games:

- Reventure (highly recommended) - Recursed (same) - Treasure Adventure Game, or its remake Treasure Adventure World - Loot Hound (so relaxing) - Wilmot's Warehouse (same) - Out of Space (the opposite of relaxing) - Q.U.B.E. - There Is No Game - An Untitled Story - Tools Up! - Viscera Cleanup Detail

And of course the well-known (as far as I can tell) Terraria, Minecraft, Stardew Valley, Undertale, Stanley Parable, Dicey Dungeons, Keep Talking And Nobody Explodes, Firewatch, Transistor, Overcooked.

This post became longer than I expected.