Technology right|thumb|Co-founder John Carmack at the 2010 GDC Starting with their first shareware game series, Commander Keen, id Software has licensed the core source code for the game, or what is more commonly known as the engine. Brainstormed by John Romero, id Software held a weekend session titled "The id Summer Seminar" in the summer of 1991 with prospective buyers including Scott Miller, George Broussard, Ken Rogoway, Jim Norwood and Todd Replogle. One of the nights, id Software put together an impromptu game known as "Wac-Man" to demonstrate not only the technical prowess of the Keen engine, but also how it worked internally.
technology right|thumb|co-founder john carmack at the 2010 gdc starting with their first shareware game series commander keen id software has licensed the core source code for the game or what is more commonly known as the engine brainstormed by john romero id software held a weekend session titled "the id summer seminar" in the summer of 1991 with prospective buyers including scott miller george broussard ken rogoway jim norwood and todd replogle one of the nights id software put together an impromptu game known as "wac-man" to demonstrate not only the technical prowess of the keen engine but also how it worked internally