PREMISE:          Wander through rendered polygonal corridors shooting or
                  grabbing the occasional sprite object, or blowing away
                  the occasional animated enemy sprite, while all the time
                  trying to avoid a green genetic nightmare called "the
                  Ripper" that has somehow escaped from its cage.
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IMPRESSIONS:      A first-person shooter in the same mode as Wolf3D, but
                  lacking its polish and charm.  Some nice touches here
                  and there, as one might expect from Core, but this is
                  one marriage of polygons and sprites that just doesn't
                  work.  Good, but not as good as Zero Tolerance.
