G-Strike

The G-Strike is a tactical grenade and wonder weapon obtainable in the zombies map Origins. It is an upgraded version of the Monkey Bomb and when activated attracts zombies and becomes the target of a single napalm missile, however, if there is a Giant Robot on the map, the robot will fire several more missiles at the target. Once the player completes Step 3 of the main easter egg, should a G-Strike be placed when all three Giant Robots are on the map, all three will fire on the designated target, causing massive damage to the gathered zombies. If the G-Strike is thrown in a roofed or enclosed area, the Hall of the Ancients or the Crazy Place for example, the zombies will not be blown up.

In When the Cold Breeze Blows Away, it wouldn't only located in Zombies map Origins, it also would located in all locations of Nolte Geschwefel's Castle and Vöcktenbühel, Zeltstrich that it would be found in during the Zeltwachen Infection and other zombie locations.