Players that own Call of Duty: Ghosts on PS3 will be able to purchase the PS4 version for $10, €10 or £10 for a limited time, Activision announced today. This follows Sony's announcement last night that PS4 games will be offered at a "significantly discounted" price – also for a limited time – to those who already own the PS3 version. Sony didn't mention a specific price at the time, but the $10 point lines up with retailer next-gen upgrades.

Ghosts, Assassin's Creed 4: Black Flag, Watch Dogs and Battlefield 4 – and specifically the publishers Activision, Ubisoft, EA and Warner Bros. – will participate in the PS3-PS4 upgrade program.

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I guess the same goes for the other games, i didn't expect such a low price. It such a great deal! 

Good deal, though I would be more interested in a physical trade in system

If only someone had come up with a clever way to give you both digital and physical copies

Sony won NA!!!!!!!!!!!

so how does this work? do i download the PS4 version or is it partners with retail ?

I don't understand why this is "limited". If you get the PS3 version, and upgrade to next gen, you've pretty much payed $70 for a game.

It's probably a digital version that you upgrade to on the next gen console

You download it, i don't know how it will work maybe has to do with your psn account. 

Ms deal is better since its between gamestop and amazon plus its physical copy also they have the season pass thing