Special Operations is a dark twist on the already shady world of Merc: 2000. It includes more information on the organizations that most mercenaries will get to know on a business basis: The CIA, DIA, FBI, KGB, GRU, MI-6, etc. It also includes enhanced combat rules, including rules for non-lethal combat, precision weapons fire, new melee weapons, the effects of antitank weapons on living creatures, and weapon specialization. Of course, Special Operations contains adventures, both for the survivalist world of Twilight: 2000 and the more complex politics of Merc: 2000.