I wasn't exactly sure what this question meant, so I am going to assume that it means which game I would want to play if I could always get enough people. For me, the answer is GURPS. For all the time I spend talking about, and running, rules-lite games, I actually prefer crunchy games with a high level of granularity to skills and mechanics. I think this is because, if I could run any kind of game, I would run hard science fiction games. I prefer that kind of game to have several different kinds of physicists and chemists, not just a generic "Science" skill. And it isn't just in hard scifi that granularity matters to me. I love Savage Worlds, but I have some problems with the system in long campaigns or back-to-back campaigns. Savage Worlds does not have a very high level of detail in its skills, this is great, it is what makes it so fast and easy, but it can make everything start to feel the same after a while. I have found that two Savage Worlds campaigns in a r...