PlayStation Vita owners will be able to play compatible multiplayer titles with PSP users, Sony has confirmed.

According to the system's Japanese website, as translated by Siliconera, if you download a PSP title onto your Vita from PSN, you will be able to play ad hoc multiplayer with users running the same game on Sony's last-gen handheld.

Apparently not every single PSP game will be compatible, though the majority will.

The most immediate beneficiary of the functionality will be Square Enix's just-announced RPG Lords of Apocalypse which is being released on both platforms, though no doubt the Monster Hunter crowd will also be happy to hear the news.