[u]Rambling of someone mildly qualified to do so:[/u] Not sure if this has been mentioned yet, but you need to have a way of limiting military and technology. Anyone whose has NRPed before will tell you, especially in a sci-fi/futuristic setting, there's always a penis measuring contest in technology and military. Also in another way, cultures/governments. [quote=Shit I've seen before more or less][i]"My generators actually work on this highly theoretical and obscure idea that allows it to be 500% more efficient than your's!" "Well my ships have superhypernanocomposite carbon-titanium-ferric crystalline armor plating allowing them to be more resistant to your sublight photon wave motion solar beam cannons!" "Umm... my small arms aren't ballistic; they're actually tiny micro-munition clusters firing out of a coilgun that also explode on impact and spread radiation in the area around them but my guys are immune to that sort of radiation because their homeworld is full of it and its only harmful to other species." "Well my 69-system planetary empire is fully efficient with no corruption and everyone only works for the good of the state and no one ever thinks of rebelling but it still has like the best security and scanner drones making sure that everyone is kept watch on and also making spying extremely difficult." "Yeah, my guys have this massive military presence that can basically go up against anyone and want to expand their influence, but they're all really nice people and will only use their massive weapons and armies when they really have too." "I have a military numbering in the billions but some how they're all volunteers who are completely loyal (but not brainwashed) and fearless with the best trained and all equipped with the finest weapons with little taxation from the citizens and still plenty of industry for consumer goods."[/i][/quote] [b]tl;dr[/b] - Basically prevent players from making "Mary Sue"/OP/broken factions or species with absolutely no sense of realism. I get it that its supposed to be fictional, but there are still some hard social things that are literally impossible to do with any system humans have thus far come up with. Trust me, nothing is more annoying than to see and NRP full of hyper militarist-imperialist that just have constant dick measuring contests but no one wants to be the aggressor and actually start shit in fear of "looking evil". [@MissingAxis] EDIT: Some extra bits: - I suggest don't do the whole "intergalatic empire collasped and you plays as its bits and pieces" as there's already an NRP for it atm. - Do not encourage massive novella-sized posts; that's a pretty good way of having people loose interest as they can't write those massive posts. - Similar to the above but probably said before, don't have people go into incredible detail on a sheet, have them keep it in a hider or something for people who want to read up on it. This goes for everything from politics to culture, economics to military since no one is going to care what caliber your gun uses or what the hell a "Intra-system Collective Economic, Trade and Commercial Currency Committee" is, their 500 year history and how it relates to about a dozen other organizations at the local, planetary level. (This is coming from someone who put in 20+ hours of researching military shit for an NS at one point).