OK, I'll throw my hat in on this. The Top Seven RPG's I've Played and GM'ed. AD&D 1st Edition - My group of friends quickly shed D&D B/X for AD&D 1st Edition. We played the heck out of it up until second edition came out. AD&D 2nd Edition - When AD&D 2nd Edition came out we quickly abandoned 1st Edition for the 2nd. We had many great campaigns up through high school using AD&D 2nd Edition. Space Master - The sci-fi variant of Rolemaster (better known as Chart Master) we used Space Master as kind of a base sci-fi system in which to create our own mash up of various genres (A few one offs mimicking the movie Aliens, bounty hunters hunting replicants ala Blade Runner, and a few other semi-post apocalyptic settings). I don't think we ever got the rules right be we loved the plasma repeater weapon charts. Gama Word - We has a few numerous short lived campaigns, which we all enjoyed, but we always seemed to return back to D&D. R...