Warframe is set to be a free-to-play co-op shooter set in outer space during a "New Dark Age". Players are introduced to the Tenno, a nearly extinct race due the slavery operations of the Grineer. The Tenno adapt to their environment by arming themselves with sophisticated warframes. Equipping special Exo-skeleton technology, katanas and alien firearms the Tenno reawaken to take down various enemy ships in objective based scenarios as quickly and silently as possible. In simple terms you are a sophisticated space ninja armed to the teeth with various arsenals at your disposal.