Which Call of Duty game introduced the multiplayer map 'Rust'?

Which Call of Duty game introduced the multiplayer map “Rust”? Call of Duty: Modern Warfare 2 introduced Rust.

Rust launched with the original 2009 Modern Warfare 2, developed by Infinity Ward. It is a compact multiplayer arena set around an abandoned oil facility in the Afghan desert, with a central tower and scattered metal structures creating intense close-quarters fights.

Its tiny layout made Rust especially popular for rapid respawns, killstreak challenges, and one-on-one matches. The map’s vertical center encouraged players to fight both around the ground-level cover and up the tower, making positioning as important as aim.

Rust is often confused with maps from other Modern Warfare games because it returned in later Call of Duty releases and became one of the franchise’s most recognizable map names. Modern Warfare 2 also introduced other fan favorites, including Terminal and Highrise, but Rust is the map specifically associated with its launch multiplayer lineup.