at the main menu tap the back triggers rappidly and youo will get out of the chair.if you look around there will be an old computer it will say press x to use use it and you can type in 3arc unlock to unlock the five map five map for zombie mode and if you type in ZORK you will get an achievment and if you type in DOA you will get an arcade game called Dead Ops Arcade
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AnswerThere is no invincibility cheat code for Call of Duty 3. Unless you wanna get in trouble.
Yes there are a few.
There is none
there is none unless u hack
Yes, there are. There are a few of them. Some unlock arcade games, zombie maps, Intel and other things. Search COD Black Ops Cheats 360. Then choose CCC (cheat code central). they usually have all the cheats