I have toyed with the idea of an online FPS/RPG set in a post-apocolyptic COUNTRY. I'm thinking something along the lines of Fallout 3 minus the VATS, with a game world so large you may never run into anyone else for a few hours of playing. Maybe half the game world could be co-op and the other half pvp.
It'll probably never happen though.
It'll probably never happen though.