Warship Gunner 2 is the direct sequel to Naval Ops: Warship Gunner from Koei that debuted in 2003, a subseries alongside the Warship Commander subseries within the overall Kurogane no Houkou series.
Warship Gunner 2 follows Naval Ops: Warship Gunner from Koei, which was released in 2003 and is part of the Kurogane no Houkou series alongside the Warship Commander subseries.