It seems that the invasions are still continuing with chapter 9 of the Zombie Mission. This chapter is only played by single or by two player gaming modes. You will be under the ground. Save people who are stuck under the ground while escaping from the zombies. Let the adventure begin!
Game controls:
Player 1:
Move: "W,A,S,D"
Hit: "F"
Grenade: "G"
Jump: "W"
Switch weapon: "Q-E"
Player 2:
Move: "ARROW KEYS"
Hit: "L"
Grenade: "K"
Jump: "UP ARROW KEY"
Switch weapon: "O-P"