Question about the Valhalla Knights Trilogy

Hey everybody, I saw this game is for free in the US, unfortunatley not in the EU, but for 20 bucks for the Trilogy I think about picking it up.

But I'm a bit confused, here on GameSpot the games are all marked as PSP, but in the PSN Store it also says the Trilogy is compatible with PS3.

Anybody can give me intel if they only mean for downloading or also playable on PS3? Thanks a lot!