Tomorrow is the second session of the office lunch-hour Traveller game, based on Classic Traveller rules and the "Death Station" adventure, both from around 1981.
The players, who are using characters from the provided pre-generated characters in the adventure, are down-and-out Travellers, stuck on a company owned mining colony with growing debt and shrinking futures. An executive from a research company on planet for somewhat nebulous purposes has proposed a deal with them - a lab ship in orbit is not checking in on schedule, and the characters are to travel up to the ship to see what's going on. If their is anything going on requring them to help out in a significant way, the executive will pay off their company debt and supply them with passage off world. If not, hey, at least they get out of the mines for a few days.
Last session, the characters used and air/raft and some vacc suits to rendezvous with the lab ship in orbit. After some investigation, they discovered that they could board the spinning ship through its docked boat - a 40 ton small craft usually used to collect biological samples on the planet's surface. The session left them aboard the "Carl Sagan", standing in the lobby and wondering where all the crew is.
I suspect next session to begin with the players going door to door down the ring of the ship (effectively a long corridor with limited "horizon" visibility), slowly discovering that things are not ok on board the ship, and that they are not alone....
(The best part is, the problem's not what they think it is)