It's difficult to understate how impactful a game Wolfenstein 3D was-how much it changed things, how it raised the bar, decided it still wasn't high enough and so tore it off and threw it over a mountain. Wolfenstein 3D was so good that, when id Software took an early version to Sierra in 1992, the publisher quickly tabled a $2.5 million offer to purchase the pre-Doom dev studio.