So the current idea I've been working on (and continuously putting off actually doing) is running a Tabletop Paranoia RPG here on the Guild, or if not that, a game set in the universe of Paranoia's Alpha Complex. Basically after some kind collapse or calamity, all of humanity lives in a vast underground city called Alpha Complex, overseen by the Computer. No one knows how long this has been going on for - but its probably a long time, as everything is continuously breaking, the systems are collapsing in on themselves and the Computer has gone insane.

But the Computer doesn't realise this. It thinks everything is fine. All the problems in Alpha Complex? Terrorists! Terrorists and Saboteurs! So the whole city operates as a bureaucratic nightmare police state where everyone must prove their loyalty to Friend Computer and Fun is Mandatory.

It'd probably be a shorter RP, since Paranoia encourages both the killing of players by the GM and other players. There are lots of secret societies and factions (being in a faction is treason), there are mutant powers (being a mutant is treason), and you get rewards for reporting (or fabricating) your team mates' treason. So you can see why its called Paranoia. 

It's feasible to run on the guild I think, just need to digitalise the item card system.