Plot
Welcome back to the Skulltiverse - a series of worlds connected by Skull Gates - portals powered by skulls. On almost every map, you must find a red skull and return to the gate from where you started, to travel to the next level.
After you defeated the Skull Lord last time, you've spent your time relaxing on in the dark and featureless void. That is until a UAC spaceship has found you and delivered some grim news - a new evil is threatening the Skulltiverse. A villainous group known as The Skullt is here. Your vacation is over.