Gameplay of the E3 2002 tech demo of Doom 3. Early prototype with cut content. Support the channel: https://ko-fi.com/neogamer https://www.patreon.com/neogamertvga Wikipedia: Id Software began development on Doom 3 in late 2000, immediately after finishing Quake III: Team Arena.[32] In 2001, it was first shown to the public at Macworld Conference & Expo at Makuhari Messe[33] and was later demonstrated at E3 2002 at LACC, where a fifteen-minute gameplay demo was shown. It won five awards at E3 that year. Late in 2002, two employees at ATI Technologies leaked a development version of Doom 3 onto the Internet. One year later, a new trailer was shown at E3 2003 and soon afterwards id Software's website was updated to showcase Doom 3 as an upcoming project, although it was also announced that Doom 3 would not be ready for the 2003 holiday season. According to John Carmack, the development took longer than expected. https://en.wikipedia.org/wiki/Doom_3#Production