Looking back at Catacomb 3D, the game that led to Wolfenstein 3D

Romero, Carmack, and colleagues discuss an oft-forgotten piece of PC gaming history.  If you know anything about the history of id Software, you know how 1992’s Wolfenstein 3D helped establish the company’s leadership in the burgeoning first-person shooter genre, leading directly to subsequent hits like Doom and Quake. But…