Sony has announced Cross Buy, billed as a new way to buy games on both the PS3 and PS Vita.

Buy a PS3 game such as PlayStation All-Stars and get the PS Vita version for free, meaning you pay once but get to play on both systems.

Other supported games include Sly Cooper: Thieves in Time and Ratchet & Clank Q-Force.

Sony indicated that the free game will only be available when buying the PS3 game and not through purchasing the PS Vita version.