Speed Cola comes from the Zombies mode in Call of Duty, where perk-a-cola machines sell gameplay boosts and each perk has its own memorable jingle. Introduced in the early Zombies maps of Call of Duty: World at War in 2008, Speed Cola increased reload speed and became a staple of later Black Ops entries. Its catchy soda-advert style tune made it easy to recognise outside gameplay, and clips of the jingle spread through gaming videos, streams and edits. It remains popular because it instantly signals a familiar perk purchase to longtime Zombies players.