Yeah basically, there won't be any hyper drives, FTLs, warp gates or something like that. The most fiction about the idea is probably the terrafromation. Everything else, I believe is within the realm of technology. Either way, I want to focus on the sociopolitical side than the tech and military aspects of it. Just a sample of what I have in mind: The RP begins with the Inner Sphere Summit, as stated above, it's being held 2 years early because of the tension of the lack of resources. The Spokesman of the summit ask the players, who're playing representatives of their respected planets: Does begin Human, born and raised in another planet with same living conditions as Earth, give you the right to the resources Earth has? Earth having the most accessible abiotic resources (mentals and similar), it's a prime location any government will fight for. Players will then wage a political war to gain and maintain the resources they need. So instead of maneuvering troops, it's about scheming alliances and double-crossing enemies.