Amazon.com: Valhalla Knights - Sony PSP : Video Games
Valhalla Knights 2 ROM - PSP Download - Emulator Games
Valhalla Knights 2: Battle Stance | Sony PlayStation Portable
PSP games: Hakuoki Demon of the Floating Blossom and Valhalla Knights 2, Video Gaming, Video Games, PlayStation on Carousell
Twitter 上的RPG Site:"Valhalla Knights first released in North America today in 2007. A PSP action RPG that was successful enough to spawn a number of sequels on PSP, Vita and Wii.