Bots

Bots (known as a short term for robots) are AI controlled players that first appeared in Call of Duty Black Ops on Multiplayer and their latest appearance was on Call of Duty Advanced Warfare. Bots appear in offline multiplayer or combat training online as well as online local or system link lobby. Bots have 4 different difficulties (on Ghosts and Advanced Warfare there is 5) those difficulties are Recruit (Very Easy) Regular (Easy) Hardened (Hard) and Veteran (Very Hard). On Call of Duty bots are seen only on Local or system link lobbies as well as online Combat Training.

Call of Duty Black Ops
In Call of Duty Black ops, Bots first appeared in this game in a combat training lobby. In Black Ops Bots are known as "Dummies" (a former word for bots), In Black Ops II they now call them Bots. Bots are seen in a Combat Training lobby, If the players wants to play with them. This can be done by pressing the EDIT GAME OPTIONS and selecting the number of FRIENDS (Bots who will fight on your side) and ENEMIES (Bots who will fight for the enemy team and against you). Bots are smart and clever but not so smart. Bots can sometimes be kicked in a lobby which is probably due to friendly fire and their classes are always for some reason weak. In Recruit Bots use Spike Cameras but for some reason, It appears that bots don't even look at their camera, they pretty much focus in to finding the enemies and to kill them. In Recruit and Regular Bots use weak tactics and never check whats behind them, In Hardened and Veteran bots use all of their tactics and focus and checks who is behind them, they can usually hear your steps. In Combat Training, the bots have their Clan Tag set to [3arc], which is the clan tag used exclusively by Treyarch members. They are programmed and Operated by Treyarch.

In Combat Training, The player can play the following game modes with bots: The player cannot play the following game modes with bots:
 * Team Deathmatch
 * Hardcore Team Deathmatch (online only)
 * Free for all
 * Hardcore Free for all (online only)
 * Kill Confirmed
 * Search and Destroy
 * Headquarters
 * Capture the Flag
 * Demolition
 * Sabotage
 * Domination
 * Any Custom Gamemodes
 * Wager game modes (Gun Game, One in the chamber, Sharpshooter, Sticks and Stones).

Call of Duty Black Ops II
In Call of Duty Black Ops II the bots are back and are more smarter than they were on Black Ops. In Black Ops II bots are known alot more smarter and supportive in more game modes than ever before. Bots all have the same difficulty they have in Black Ops. They not only appear in offline multiplayer, they also appear online on Combat Training on Both Bootcamp and Objective. They also have the same Clan tag [3arc] again, which is the clan tag used exclusively by Treyarch members. They are programmed and Opearted by Treyarch. Bots can be played with If the players want to practice or to just play with them. This can be done By selecting Local, System link or Private Match by doing going to SETUP BOTS. The player can choose how many FRIENDLY BOTS and ENEMY BOTS he or she wants to play with and can select their difficultly by going to BOT DIFFICULTY. If the player wants to play with both online players and bots, he or she can do so by going to XBOX LIVE or ONLINE by selecting Combat training and to pick which game modes you want to play on: Boot Camp or Objective.

The player can play the following game modes with bots: The player cannot play the following game modes with bots: In online Combat training here are the following playlists:
 * Team Deathmatch
 * Kill Confirmed
 * Domination
 * Demolition
 * Free for all
 * Capture the Flag
 * Headquarters
 * Hardpoint
 * Search and Destroy
 * Party Games (Gun game, One in the chamber, sharpshooter, stick and stones)
 * Bootcamp: A game where 3/6 humans and 3 bots in each team fight the enemy team, only on Team Deathmatch. Bootcamp is for only COD players who are below Level 10, once you reach level 10 or higher you can no longer access this game mode and players earn Double XP for doing so.
 * Objective: A game of when any player of any level can player a different gamemodes besides team deathmatch, all game modes (expect for search and destory and party games) can be randomly picked to play. Each team will have 3 humans and 3 bots (more than 3 bots if the humans dont have enough players and the bots fill in). Players will earn half XP.
 * Bot Stomp: A game of when a team of 6 human players fight and go a team of against 6 enemy bots. Players do not earn XP for this game mode, But its a good way to practice up and to get to know things better (maps, guns, etc.). On February 4th 2013, Bot stomp will no longer be available on the Combat Training Playlists. 

Call of Duty Ghosts
In Call of Duty Ghosts bots are now even alot more smarter and they will player like a normal human player would play in call of duty (camping, hit and run, sniping, etc.) They are this time operated by Infinity Ward, They have the same four difficulties the bots have in black ops 2 but a new one called "Mixed" that randomly picks each Bot a different difficulty. The player can now choose a bot difficulty for each bot team. The bots can be played with by just going to Local or System Link and then pressing options and setting the number of bots and their difficulty.

Bots are supported in all game modes of the game including gun game and search and destroy.

Call of Duty Advanced Warfare
Bots also appear in COD AW, They are exactly the same skill level as Ghosts bots are. Expect they have boost jump and everything and operated by Sledgehammer games.

'''They are also supported in all game modes as well. '''