Shockwave is a supplement for both Ogre and G.E.V. It includes 224 counters for a variety of new units a 13x14.5' map that fits on any side of the G.E.V. map and twelve scenarios (four for Ogre, eight for G.E.V.). New units in Shockwave include a devastating Cruise Missile (and a Laser Tower to shoot it down) three new types of GEV and the Superheavy Tank. Expansion of the Ogre/G.E.V. line.Expands: Ogre G.E.V. - BoardGameGeek