20th Anniversary Doom Challenge

The 20th Anniversary Doom Challenge was an event organized by id Software and Bethesda as part of the 2013 twentieth anniversary of Doom, and took place as part of the convention in. It was announced on June 5, 2013, and was held at the between Thursday, August 1, 2013, and Saturday, August 3, 2013. Registration was on-site only, on August 1 at the convention center. Players were allowed to enter on a "first come, first served" basis.

The grand prize for first place of $1000 was taken by Jefferson Kist (JKist3). The top three winners also received a commemorative Doom II trophy designed by frequent QuakeCon award designer Cobalt.

Format and schedule
Sixteen free-for-all matches were used to qualify 32 players for a single elimination tournament bracket. The following bracket matches were conducted in a best-of-three format. Each match was scheduled to last for 30 minutes. Some events were streamed on a limited basis on Twitch by production company FACEIt. Commentary was provided by Xavier "ZoOt" Dhorne and Alex "Jehar" Popa.

All game play was undertaken using the Odamex 0.6.3 source port. The following maps were part of the tournament map pool:
 * Dwango5 MAP01
 * Dwango5 MAP07
 * Judas
 * King
 * SSL2

Winners
The final standings of the tournament were as follows: