Some folks step into the ring ready for battle with a round-house kick and a 1-2 jab-cross.  Still others would rather enter the arena with a plasma cannon, link gun or sniper rifle.  It all depends on whether your prefer the real or virtual octagon.  Then again the octagon could be more of a circle of death too.  How uplifting.  Perhaps in the latter case you might bring something with you cut from a similar geometrical sphere of influence.  Enter the FPS “Circle of Death” keyboard…