Call of Duty: Green Zone

Call of Duty:Green Zone?
Call of Duty Green Zone is a upcoming? ? First Person Shooter (FPS)? developed by 4Z Studios.

Story
Details are coming but leaked info says the game will be set in 2040 when Australia is sudenly under seige by the Japanese Imperial Army? backed by China to get hold of Australia's mining facilites as the recource hungry China had their economy crippled by a group of techno terrorists pretending to be Australian.

Other Info
Also the leaked info says their will be a new game mode called Madhouse in which players have to kill as many enemies until they are overwelmed.Players will get upgrades after reaching a required score.