On the reason behind Dissidia Final Fantasy being an action game, Nomura explains that the plan started after a discussion with Kingdom Hearts’ Yousuke Shiokawa and it was decided that a 3D action game based on Shiokawa’s team technical expertise is the best way to gather all the characters from the FF series. Shiokawa, who is the game’s director, acknowledge that the pressure is building up recently after the game’s public revelations.
PSP was chosen as the platform due to it’s ad-hoc mode and the fact that people generally don’t like split screen gaming. Nomura said that with its large install base, the PS2 maybe the natural choice but it also means that multiplayer modes has to be played on split screen, which reduce the fun factor by half.