From publisher blurb:
The Aliens Have Arrived! And They Are NOT Friendly!
Mysterious attacks take place all across the world, with no one certain exactly what's happening. The governments say that terrorists are responsible, but of course only a handful among them know the truth: Earth is being invaded, and there's very little anyone can do to stop it. The aliens' powerful psionic abilities make resistance difficult if not impossible, but a handful are immune. And those people are recruited to join the Invasion Defense Force!
Tiny Invasion is a campaign and setting enhancement for the Tiny Frontiers: Revised Edition role-playing game. It adds all the tools necessary for a modern campaign to fight back against the alien invaders, and to take and turn their own technology against them! Create an Operative from one of four different Backgrounds, and choose one of six different Training packages! Gather enemy components and use them to research new weapons, armor, vehicles, and most powerful of all: unlock new Advanced Training options!