Description: The remaining human colonies are regularly attacked by mutated zombies coming from the depths of an old military laboratory. Your mission is to blast yourself to the lower decks of the underground base, fighting the evil creatures and the radiation. Avoid anomalies on your way. Use the arrows to move around, press Space to place bombs. Use Ctrl to use your weapon. Gather weapon parts to unlock the new, more powerful, weapons. Use 1 - 3 keys to change your weapon.