Summary
You are on a space station.
You get to pick three jobs you want and might get one of them.
Round can be anything from a boarding party attacking or traitors sabotaging the station to the AI going all Terminator.
Depending on the round type and who ends up as the "bad" player\s shit goes down.
Singularity gets loose/meteors fuck up medbay/the AI attempts to kill everyone/Tox blows up
Escape shuttle is called.
Round ends.

Its and oddly fun game once you get use to the weird control scheme though it can be quite addicting. Last I heard the Dev community for /tg/station is still going strong whereas the goons are far past their prime.