Invader TD is a side scroller tower defense, where the player is in the role of an alien race with the purpose of infecting and dominating the earth, but for that you must protect yourself from the attacks of the humans, who are trying to destroy you.

Invader TD is a side scroller tower defense, where the player is in the role of an alien race with the purpose of infecting and dominating the earth, but for that you must protect yourself from the attacks of the humans, who are trying to destroy you.