Yora
Legend
Planescape is not actually very suitable for play. 
It has fantastic worldbuilding, but there's really not much for PCs to do. All but a few of the factions have any motivations to do something that players can get involved with.
It says specifically that it's not a setting for mercenary dungeon crawling, but that's really the only thing that's available to PCs.

It has fantastic worldbuilding, but there's really not much for PCs to do. All but a few of the factions have any motivations to do something that players can get involved with.
It says specifically that it's not a setting for mercenary dungeon crawling, but that's really the only thing that's available to PCs.