It needs to be something with a lot of replayability, so, assuming there's no online multiplayer, and there's no other people to play board games and tabletop RPGs with, something similar to this:
- Kerbal Space Program, for ability to infinitely mess around with making rockets/spaceships and test them in proper orbital mechanics, while retaining whimsical nature (or Kitten Space Agency, which is spiritual successor involving some of the same people from KSP1)
- some war sim, probably something from either Combat Mission, Steel Panthers or Battlegrounds/Campaigns series...I haven't played anything new from this very niche genre for quite a while, so I would need to check on what's new there as well
- some management sim, either some Civ-like or SimCity-like
- something lighthearted, either MK8 Deluxe, for the sheer size of its content or something simple like arcades from Golden Arcade age of 80s, like Galaga
- either something like Sid Meier's Pirates!, for it's open world privateering where you can finish one "career" in one sitting, something like Elite (whether it's actual Elite, like First Encounters, or some of games influenced by it) for its open ended space exploration, OR Kenshi or Mount&Blade for their open-ended worlds with no predetermined goals OR some Rougelike (like Dwarf Fortress, Caves of Qud or ADOM)...this 5th entry would probably take by far the most time to decide what should I pick
5 games is just not enough, no matter what you pick in the end...







