After spending quite some time trying, and failing, to get a Shadowrun game going, I finally ended up with an Eclipse Phase game by accident. I started it with the PCs as special forces troops. We played a dozen sessions in the prefall era, just so they could get used to the concepts a little at a time. Then the Fall came, and they were right in the middle of it for the next dozen sessions, ending with a marathon all-day gaming session. I had detailed the NPCs in most ot their company pretty well, with their entire platoon, 28 NPCs and 5 PCs, all having their own character sheet. Then I fed them into the sausage grinder that is the Fall. Started slow, as it didn't all happen at once. I had each platoon, including theirs, doing different tangent missions in the story. By the time of the PCs third mission the company had been reconsolidated as two platoons, with some central NPCs from their platoon dying, and me writing up new sheets for the replacements from 1st and 2nd platoons. Then it got ugly. After several more missions, and more casualties, I had the two short platoons left secure a Promethian in danger and transport it's, fairly large, computer self to an exfil off-planet. Then the remaining platoon, being at the spaceport, found itself pressed into service, along with quite a few others - almost a full army corps of clerks, cooks, and anyone with a gun - to defend it, the surrounding area, and the several million civillians trying to board a shuttle or get backed-up off planet, from a horde of incoming Titan toys. The PCs of course, being SF soldiers, and therefore: 1. Military Property 2. Highly developed weapons systems representing large investments in money and training have already been backed-up off planet. They were therefore free to act like lunatics during the apocalypse, which they proceeded to do. Kids were loaded on shuttles (not all of which made it out), all adults who were backed-up were handed weapons, given a 2 minute briefing on how to use them and fighting from fixed defenses, and sent to the front. Considering themselves 'on deadly ground', they all fought for over a week straight (civilian cannon fodder dying by the thousands), three of the PCs dying along the way (at which point they were handed a sheet from one of the surviving NPCs from their platoon). As the slow but steady attrition continued and the players watched 'their' world be destroyed and everyone they know die in dozens of different ugly ways, a few of them told me it felt like there was an almost palpable sense of impending doom. That made me very happy. It ended with a huge final battle, and a fighting withdrawl to the Go-To-Hell nuke, in which the last of them fought to the death, all the players but one switching to several different NPCs as they each died multiple times. It was beautiful. Without any dice trickery or outright cheating, the last defender was one of the original PCs. The last man, or in this case, woman (and she's never let anyone forget it), detonated the nuke, giving the last survivors, and herself, a 'clean death', which I suppose it was when compared to being messily killed and forcibly uploaded like ALL the other PCs... Then I resleeved them immediately after the Fall and brought them into Firewall on the ground floor.