Complex sentence: The studio continued work on the "Sakura Taisen" series in 2001 along with Rieko Kodama, Ohba produced "Skies of Arcadia" ("Eternal Arcadia" in Japan) for Dreamcast which was a RPG similar to the Mega Drive Phantasy Star games.
Split into simpler sentences: The studio continued work on the "Sakura Taisen" series in 2001. Along with Rieko Kodama, Ohba produced "Skies of Arcadia" ("Eternal Arcadia" in Japan) for Dreamcast, which was an RPG similar to the Mega Drive Phantasy Star games.