If we stay with three or four players, my plan is to play Shock: Social Science Fiction. It's GM'less, so I'll be facilitating and explaining the rules. It's a good fit for a small group, but if we suddenly wind up with a larger group I'll pull something else out instead.March Double-Header (Mar 6)
Shock emulates old school "meaningful" sci fi, where the sci fi elements are really there to reflect and examine real world issues, like individuality or poverty. The game allows a lot creative involvement for all the players, and lets everyone try their hand at story game skills like scene framing and building conflicts.
No prep necessary: just bring your brain.