About the interplanetary war... Operation Bouncy House

In this fast-paced epic novel, a man engages in a fierce battle for his planet against nearly impossible odds, when players from Earth try to destroy him from afar. All settler Oliver Lewis could hope for was to run the family farm with his sister, perhaps give two or three concerts with his band, and keep his family's old fleet of smart farming robots running for as long as possible. He thought that fully opening the transport portal, restoring instant travel and full communication between Earth and his planet, New Sonora, would be a good thing. But there's a problem. Although the government promises the settlers to live in peace, it has other plans. The giant Apex Industries has been contracted to begin an “evacuation operation.” But maximizing profits will always remain Apex's top priority. Why spend money on printing and publishing AI soldiers when it can be turned into a game? Why not charge the bored inhabitants of Earth a fee for the opportunity to design their own war machines and pilot them remotely from their homes? The game is called "Operation Bouncy House." Oliver and his friends soon find themselves fighting for survival against machines piloted by players who have paid a hefty sum for the privilege. With the help of an old book from his grandfather and a bucket full of rusty spare parts, Oliver is determined to defend the only home he has ever known.