Fabuła
The UAC has discovered Skullgate - interdimensional portals activated by a magic blue skull and used them to travel between worlds. Unfortunately they ran into some demonic problems again.
Skulltiverse
Skulltiverse is a community project built around constrains in both playable space and build time. Each map was mostly completed within a week. The wad contains 32 maps split into 6 themes - Techbase, Corrupt Techbase, Ruins, Marble Hell, Fleshy Hell and Void.