 Production on "Grand Knights History" began in 2009 and lasted around two years.Following the release by Marvelous Entertainment of "" in 2009, producer Yoshifumi Hashimoto contacted Vanillaware about working on a new title together, after hearing Vanillaware's Tomohiko Deguchi wanted to develop for the PSP.The game was Vanillaware's first turn-based RPG, with Deguchi aiming for a war-based RPG that would "connect everyone".