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A mod for The Ultimate Doom
Sheer Poison is a single-level PWAD for Doom which occupies E2M1 level slot. It was designed by Zan-zan-zawa-veia. It uses new music track as a replacement. The map has received one of the 22nd Annual Cacowards. Sheer Poison was featured in Doomworld's Top 100 Most Memorable Maps, placing 74th.