Call of Duty: Mobile is a free-to-play shooter game developed by TiMi Studio Group and published by Activision for Android and iOS. It was released on October 1, 2019, where it was one of the largest mobile game launches in history, generating over US$480 million with 270 million downloads within a year. Call of Duty: Mobile was published in other regions by Garena, Tencent Games, VNG Games and TiMi Studio Group.

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Players can choose to play ranked or non-ranked matches in multiplayer mode. It has two types of in-game currencies: "Credits", which are earned through playing the game, and "COD Points", which are bought with real-world money. It is possible to play the full game without paying, though some exclusive character and weapon skins can only be bought with COD Points. Apart from standard matchmaking, a private room for both the multiplayer and battle royale modes can also be accessed where players can invite and battle with their in-game friends.

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The multiplayer mode is a first-person shooter similar to previous Call of Duty games. The game also has "Scorestreaks", which are special weapons that are available as the player reaches certain times and points. Additionally, the game features special and limited multiplayer modes that last for varying lengths of time. These include: Prop Hunt, Rapid Fire, Sticks and Stones, 2v2, Capture the Flag, One Shot One Kill,[6] Snipers Only, and Gun Game, and Attack of the Undead among others.