id Software releases *Wolfenstein 3D*

While not a true 3D engine, *Wolfenstein 3D* showcased John Carmack's innovative raycasting engine, creating a convincing pseudo-3D environment that set the stage for later, fully 3D engines.

Significance

Demonstrated the commercial viability of 3D-like graphics on standard PCs, proving that advanced rendering could be performant and engaging, and was a direct precursor to the Doom engine.