The Gulag comes from Call of Duty: Warzone, released in 2020, where eliminated players are sent to a prison arena to fight one opponent for a chance to redeploy. The name references Soviet forced labour camps, which gives the mechanic its grim tone. Clips and sounds from the mode spread through gaming streams and edits, and gulag became slang online for any harsh punishment or last chance challenge. It remains popular because the idea is instantly understood even outside Warzone.