Sail an airship across the endless blue of the plane of air, or visit the strange clockwork world of Mechanus. Journey to Limbo and give form to the chaos, or dare to venture into the burning wastes of Hell itself. The planes are full of wonder, and of terror.
This game features Planescape setting material (as well as material from other 2e settings here and there since this is a multiverse game). The rule-set being used is Pathfinder, with modification as necessary to support the setting and its themes.