I don’t own mw3 but my friend is letting me game share so I can play mw3 and I just bought...

Well.no vault.upgrade does.NOT APPLY to gameshare.

You must buy your own digital mw3 to use vault.

Upgrades apply to accounts game owners not your xbox account because it usually applies.to the registered account

This is regardless of publishers ea capcom square.ENIX Activision all have the same policy

I like IW games and not Treyarch, so I bought MW2, MW3, and Ghosts and rented Black Ops. I found out I hated Black Ops and didn't buy the next one. I play the IW games in rotation based on what my friends are playing or what I feel like doing. Being maxed
in MW2, I play it much less, but still have fun with going back to my roots in COD. That game will forever entertain me, while MW3 is fun for when I want to play Domination and own with a support class, and Ghosts is where I mix things up and try new setups
and modes. My personal preference goes in order of MW2, Ghosts, and MW3, but that's just my opinion.

I never even bought MW3. A friend bought it for me and I turned up playing it longer than my main group of friends. Ultimately, it bombed for us in general. While I'm sure that TA's games are better, I still fear that the game
will just be overly frustrating to play over any reasonable period of time.

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My whole friend's list will be playing like mad for the first week. After that, I'll be on my own or with a single main friend more often than not.

I’ve also had a problem with mw2 sense mw3 came out. All of my progress was deleted just like this guys was. Mine is a step further though because I cannot play modern warfare 2 anymore no matter how many times I update or redownload the multiplayer.

My friends that have mw3 are able to play mw2 no problem but a couple buddies and I that haven’t bought mw3 cannot play mw2. We also cannot find game on the PlayStation anymore it’s only mw3 and mw.

Do we have to buy mw3 just to play the game we already have??

I bought all 3.

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I only got MW3 so I could play with my friends.

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Bf3 is now my favorite online shooter, but Skyrim is just so frickin' amazing.