The new game is based on the previous one, but there are some changes. The most important change is that the player can now control the actions of the aliens, which was not the case in the previous game. This is done by having the player interact with the aliens in the game. This way, the player can have the aliens do things like attack enemies, help him, or even attack other players. The player can also use the aliens to help him with tasks, like destroying a certain amount of enemies, or even with missions.

The game also introduces a new type of enemy: the alien invaders. They are much more dangerous than aliens from the previous game. They are also more intelligent and have a much more advanced technology. They are also more brutal than the aliens from the previous game. The game also introduces a new type of weapon: the weapon grenade. This weapon is very different from other weapons. It is much more powerful and much more destructive than other weapons. It is also very easy to use.