Wanderlust

Premise
Players play the role of a spirit being who inhabits a random human character. The game is facilitated by a "game director" or GD. There are different types of spirits with different motives, strengths, and weaknesses. With each play session the players' spirit possess a new random human character. The player is essentially playing two characters at once, the possessor and the possessed. The GD provides a scenario called a scene. Settings can be anywhere and any time; between sessions, the PCs are assumed to travel across dimensions to inhabit new humans in different settings, although they can repeat the same setting if preferred. Settings can be modern life, sci-fi, or anything imaginable. The goal for each player is to gain soul power for their spirit character. Ways to gain soul power differ for the different kinds of spirits. Players may cooperate, plot against each other, or come into direct conflict with each other.

The official campaign setting of Ddaear
Ddaear (/ðɛə(ɹ)/)