Somambulism is a semi-gestalt D&D 3.5 campaign set in Eberron. It'll feature a heavy-psionics theme, as well as a strong survival element. Characters are the result of experimentation by an unknown and foul organization whose motives, endgame, and identity are unknown. It'll be along road to finding out who did this to them and, more importantly, who they are.
Credit goes to Flux for the concept and majority of the house rules.