Here are some worth your time and money. Look to indie games, mostly. Lots of great stuff in that space.

- Spelunky

- Don't Starve

- Factorio

- Oxygen Not Included

- All Zachtronic's games

- Stephen's Sausage Roll

- Stardew Valley

- Faster than Light

- Kerbal Space Program

- Dungeon Warfare (if you're a TD fan)

- Return of Obra Dinn

- Prison Architect

- Mini Metro

- Cities: Skylines

- Frostpunk

- RimWorld

- Darkest Dungeon

- Monument Valley

- Portal

- Journey

- Paper's Please

- This War of Mine

- The Witness