how would you describe ss13 to someone who's never played or heard of it before?

[babayetu83]

i'm trying to hook some friends into playing it by describing it as like a MMO version of dwarf fortress except you play as 1 dude and the whole thing is player driven

the subject line was too short for me to include 'succinctly', so, i mean how would you succinctly describe ss13 to somebody who's never heard of or played it