Killtastrophe comes from Halo: Reach, released by Bungie in 2010 as the prequel to the original Halo trilogy. The medal rewards eight kills each scored within four seconds of the last, part of a escalating series voiced by longtime announcer Jeff Steitzer since 2001. Clips of the call spread through early YouTube montages and MLG highlight reels, where the rarer medals became status symbols. It remains popular in edits and soundboards because few shooter announcements capture a dominant streak as clearly in a single word.