Steam games I've enjoyed when not playing KSP: The Long Dark ($19.99), winter survival in the Canadian wilderness MirrorMoon EP (9.99), space-themed discovery and puzzles FRACT OSC (14.99), discovery missions in a world of music (world is reminiscent of Tron) Eidolon (15.00), survival and story-following in Pacific Northwest The Vanishing of Ethan Carter (19.99), First-person detective Sunless Sea (18.99), 2D discovery in a world beneath the surface (think Jules Verne meets Lovecraft) Or if you like Web-based games, I'd suggest looking at Fallen London. Same company that made Sunless Sea, this links into the same world, a virtual card game with good storylines. And free-to-play as well