- Hordes, because when you kill the last one, another group appears?
- Shooters, because they lob missiles earthward in the video game?
- Warband, because they implacably advance toward their enemy?
- Flyers, because they descend from space?
I currently have enough erasers for nine stands of Invaders, adding up to 18 Army Points. The saucer from the game will provide another 3 AP as an Airboat and serve as the general. Since there wasn't any kind of saucer eraser for sale, I'm making this myself from a wooden disc, which I hope to show you soon.
That leaves 3 AP to bring the army up to full strength. I have an idea of what I'm going to do to fill that gap, but I'm saving it for a surprise.