Call of Duty: Mobile is a multiplayer battle royale game developed by TiMi Studio Group and published by Activision for Android and IOS. Released as a free-to-play title as part of the Call of Duty video game series, 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 Corporation and TiMi Studio Group.

The game's two primary modes are multiplayer and battle royale. Players can choose to play ranked or non-ranked matches. Apart from standard matchmaking, a private room for both of these modes can also be accessed where players can invite and battle with their in-game friends. The game includes 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.

Additional modes include Zombies, which can be played in a more traditional "Endless" mode and in a new "Raid" mode where players survive for a fixed number of rounds and fight a boss afterward, and "DMZ: Recon", an adaptation of Call of Duty: Modern Warfare II's DMZ extraction mode, where players can fight against AI enemies and other players to extract loot and weapons for cosmetic rewards.

Call of Duty: Mobile has a seasonal update system. New weapons, skins, maps, and limited-time events are added through the Battle Pass each season. Seasons also include special challenges and game modes that reward players with in-game items and experience points. This system helps keep players engaged and keeps the game fresh each season.

Characters, weapon skins, and events are all designed with a specific theme in mind for each season. These themes frequently show teamwork, futuristic details, or military environments. Each season has a similar identity because to the theme-based format. The Battle Pass is divided into free and premium tiers. Players can unlock rewards. Character skins and special decorations are examples of premium prizes. Seasonal updates often include limited-time events.. Special objectives, changing game modes, and login rewards are frequently included in these events. Rewards are no longer available after the event finishes. Season updates also include technical improvements and bug fixes. Developers can adjust weapon performance and game mechanics to maintain balance. These updates support the game's long-term development as a live service title.

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 become available as the player reaches certain point thresholds. The primary modes which the game features include Team Deathmatch, Frontline, Domination, Hardpoint, Search and Destroy, Control, Free For All, and Kill Confirmed. 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, Snipers Only, Gun Game, and Attack of the Undead among others.

The game also includes battle royale modes featuring up to 100 players. Players can choose to play solo, in a duo, or in a four-man squad. At the start of a match, all players choose an ability from healing to making a launch pad. Once all 100 players are ready, they board a transport plane that flies across the map in a randomized trajectory. This flight path changes every game. Every team is automatically given a jump leader who decides when and where the team will land, However, players can choose to break away and jump independently if they prefer.

Each player starts with a melee as their only weapon. Scattered across the map are various weapons, vehicles, and equipment that players can use to eliminate enemies and increase their chances of survival. The mode has high tier loot zones (marked in yellow on the map) that provide players with better items. The safe zone gradually shrinks as the match progresses, forcing players to move inward. Those who remain outside the zone for too long will take continuous damage and eventually be eliminated. The last surviving player or team wins the match. Battle royale also has limited modes like Battle Royale Isolated, Battle Royale Alcatraz, Battle Royale Blackout, Battle Royale Krai, and Battle Royale Blitz. The game also features a first-person shooter mode known as DMZ: Recon, which is an extraction based game mode (in effect as of 2025).