Chicken Invaders: The Next Wave (known also as Chicken Invaders 2) is the second game in the main Chicken Invaders series, released on 22 December 2002. The player again takes command of the same lone spacecraft of the previous installment and must eliminate the chicken infestation of the Solar System. The game is considered a major improvement over its predecessor, featuring a variety of unique waves of chickens with different types of enemies and bosses, as well as allowing the player to move their ship in both the horizontal and vertical directions. It is also the first game in the franchise to introduce multiple weapons.
[Source: wikipedia.org]