Kiss: Psycho Circus for Dreamcast

The demigods, or Elders, have been cast into the void because of the breach of an ancient oath. Through the machinations of an (already dead) archenemy this triggers the conception of The Nightmare Child. If this entity is born before the return of the Elders, it will take their place in the cosmos and basically swallow the universe whole, just to spit it out again in a highly undesirable form.