Down the Gullet of the Space-God!

From the introduction:

After witnessing the birth and death of countless universes, the mighty space-god Kosmo, Smasher of Suns, and Pulverizer of Planets, has died. Even now his body drifts through the void of darkest space. Every faction in the known universe, from governments and gangsters to wackos and warlords, wants to claim his body. The Intergalactic Brotherhood of Celestial Guardians has entrusted your heroes with the task of entering Kosmo's corpse and retrieving the core-consciousness from his brain so they can forge a new space-god. The balance of the universe is in your hands!