At Gamescom last week Sony unveiled Cross Buy, a scheme which will see customers who buy specific first-party PS3 titles receiving the Vita equivalent for free.

The products included in the deal are PlayStation All-Stars Battle Royale, Sly Cooper: Thieves in Time and Ratchet and Clank: Full Frontal Assault. The initiative currently applies to first-party games only, and there is no word yet if it will expand to third-party titles in the future.

"We'll obviously encourage third-parties to adopt it but ultimately whether or not a game includes Cross Buy is a publishing decision and it will be at the third parties' discretion whether or not they want to go down that route" head of Sony Computer Entertainment Europe Jim Ryan informed GamesIndustry International.