Rise of the Triad: Dark War

A madman with power to kill millions has been discovered, and HUNT (High-risk United Nations Taskforce) has been dispatched to discover his plans. Your team was infiltrating his island stronghold when everything went to hell. The infiltration boat exploded and fire came from all directions. The only way out is in, into the the fortress, but to stay out here would be certain death. So in you go, guns blazing...

Rise of the Triad, a first-person shooter, is the successor of Wolfenstein 3D, with a somewhat improved 3D engine. Everything is still composed from blocks, but multiple vertical levels have been added; there are stairs made of platforms floating in air, and jump pads which launch you (and the enemies) high up so that you can walk over tall barriers in your way.