Killamanjaro comes from Halo's multiplayer medal system, where rapid multikills earn escalating announcer calls. Halo Reach, released by Bungie in 2010, kept the fan favourite medal for seven kills in quick succession, voiced with the series' signature theatrical announcer style. Clips of the call spread through early montage culture on YouTube and forums, then into modern soundboards and short edits. It remains popular because it instantly communicates a rare achievement without any explanation, even for viewers who have never played the game themselves.