WHEN THEY ARRIVED

Alan went hunting in his grandfather's country house. There was an invasion of the aliens. Cities are destroyed. You need to use survival skills and ingenuity to survive and save the planet. Build, explode, explore the world, develop your skills, try all ways to stop the aliens invasion."What would I do after the alien invasion?" It's a question you've probably asked yourself, and it's a question we want to help you answer!