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Title/logo from Zero Tolerance, a really inventive first person shooter on the Sega Genesis, which in spite of the limitations of the hardware, makes truly phenomenal use out of what's available to it. There's some truly fantastic attention to detail, and the game even supports multiplayer with the use of a link-cable, as well as two copies of the game, two consoles, two controllers, and two TVs.
For a corridor shooter akin to Wolfenstein 3D, you'd be quite surprised at some of the tricks the game has up its sleeves.