i was thinking that now microsoft have enabled users to use external memory for xbox's will it be possible for or if the editor to use mods in crysis 2 just like unreal tournament on ps3. please dont attack me with your nagative words of anger i am new
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We don't know.

I suppose you could make a mod on PC, put it on a USB drive, and port the mod to the Xbox 360. To do this though, it would take a large effort from Crytek, and i don't know if they think it is worth it. I think it would be pretty cool though, and maybe they could add a mod auto downloader as well so you could host it on a server and joining mates could dl it from the files stored on your xbox hdd.

it wont happen. microsoft is known to restrict anything that they don't get paid for. for instance valve wanted the left 4 dead and left 4 dead 2 dlc to be free on xbox like it was for PC but microsoft said to either charge (so they'd get money too) or they wouldn't allow it

Unfortunately i don't think there is enough money in it for either parties considering the amount of time both would have to invest in creating such a feature

Modding is not an out-of-the-box feature with X360 games. It takes alot of effort, time, technical know-how and money to mod a 360 game. Modding on the console is also a breach of contract with Microsoft, you could potentially get your Gamertag banned and Xbox 360 locked out of Xbox Live, forever. Microsoft actually banned over 1Million modded Xbox's earlier this year.

In other words: no.