Released along with the companion game Zerker X Ninja, Mega Man Star Force 2: Zerker X Saurian continues the series' theme of melding card battles with traditional RPG gameplay. Gamers once again take control of Geo Stelar and his friend Omega-Xis as they navigate both the physical world and the Wave World -- an alternate reality network powered by electromagnetic waves -- battling unidentified animated beings and a new rival named Rogue. From the chaos springs a mysterious organization aiming to revive an ancient civilization, and only Geo and Omega can foil their plans. Gamers can fight back by harnessing the spirit of the ancient "Tribe" species to transform into an Elec Zerker that fights with a lightning-powered sword, or morphing into the flame-wielding Fire Saurian. The game world at large is seen from an isometric viewpoint, but drawing battle cards triggers confrontations displayed in 3D on three-by-five battle grids. Gamers can use the wireless LAN or nintendo Wi-Fi Connection to communicate with friends, share battle secrets, swap cards, and test their skill in friendly head-to-head fights.