Mission X is the modern-action counterpart to the Dungeon Fantasy RPG: a 100% complete, self-contained Powered by GURPS game that keeps the elegant 3d6 core while streamlining everything for fast, lethal play in Stargate-style first-contact horror, XCOM raids, and desperate last stands. Veterans feel instantly at home, new players are shooting bad guys in the face in under an hour, and the whole system is tuned for the table instead of the textbook.