Invaders 4 | Chicken: Enemies drop Keys used to buy unlockable features and ship upgrades. Arsenal & Equipment : The view automatically zooms in or out to keep boss fights or large-scale action centered. Chicken Invaders 4 : Excessive firing causes weapons to overheat, requiring tactical management. : Enemies drop Keys used to buy unlockable is a comedic shoot-'em-up game released in late 2010 by InterAction Studios . It is the fourth main entry in the series, following a hero's battle against intergalactic chickens seeking revenge for humanity's consumption of Earth's poultry. Core Gameplay Mechanics Chicken Invaders 4 The game features 9 standard weapons, each upgradeable through 11 power levels (plus a secret 12th). |