Unreal Tournament, released in 1999 by Epic Games, built its Capture the Flag mode around clear audio cues so players could follow the match without watching every indicator. The flag alert was one of those cues, warning teams that the flag status had changed during fast multiplayer battles on PC. As clips, mods and fan soundboards preserved classic UT sounds long after release, this alert survived as a nostalgic shorthand for objective danger among arena shooter fans and retro gaming creators.