Get Ready To Master Space and Time in a Revolutionary First Person Shooter With Endless Tactical Depth.. Nimble Giant Entertainment, recently acquired by the Embracer Group, today announced that their paradoxical arena shooter, Quantum League will be leaving Early Access on Steam on April 15th. . Quantum League is a revolutionary time-paradox shooter: a competitive online FPS where players battle within a time loop, tactically teaming up with their past and future selves