This clip comes from Team Fortress 2, Valve's class-based multiplayer shooter first released in 2007. The game's announcer voice became memorable for delivering round and match updates in a cold, authoritative tone, and “Victory” is one of the most recognizable examples. Outside the game, the line spread through gameplay compilations, YouTube edits and short meme videos because it instantly signals a win without needing extra context. It is still popular thanks to TF2's long online life and the wider nostalgia around classic multiplayer game audio.