Invaders 4: Ultimate Omelette Is Fourth Series of Chicken Invaders. In This Game 120 waves across 12 levels.In This Game includes weapons which can be upgraded through 11 power levels, with a supercharged 12th level. In This Game The weapons from Revenge of the Yolk are available as 'unlockables'. Ultimate Omelette unlockables can be purchased individually by collecting keys, which are dropped from destroyed enemies during the course of the game. In This Game A New feature is the capability of the player's spaceship to face in any direction depending on the level (it was always facing up in previous games), and the camera can also zoom in or out depending on the wave (boss fights typically have the camera zoomed out to contain all the action). In This Game The plot begins with the player/hero at Space Burger. In This Game A portal suddenly opens and a ship comes out. In This Game The ship says its name is Hen Solo and urges the hero to follow him to his galaxy to see the Chickens' latest creation, the Egg Cannon.