"Intelligence reports are sketchy at best, but what we do know is this: The Strogg, a formidable cybernetic race, is determined to conquer Earth's population, and have launched attacks against our planet. They are an unstoppable evil and they have no reservations about fulfilling their insidious plan - the annihilation of every living thing on Earth.
But Earth has a plan as well: You.
You're a Space Marine. Special Operations; elite among the Forces. You've been dropped behind enemy lines to carry out a reconnaissance mission of the Strogg's home planet. Your objectives are clear: Infiltrate. Destroy. Survive!
Stop the Strogg plan to wipe out Earth and her inhabitants."
But Earth has a plan as well: You.
You're a Space Marine. Special Operations; elite among the Forces. You've been dropped behind enemy lines to carry out a reconnaissance mission of the Strogg's home planet. Your objectives are clear: Infiltrate. Destroy. Survive!
Stop the Strogg plan to wipe out Earth and her inhabitants."
— Quake II PSX and Quake II 64 manual
