Watch Arthur 3: The War of the Two Worlds (2010) HD Full Movie Free on SolarMovie. Watch Arthur 3: The War of the Two Worlds (2010) online free. With Maltazard now seven feet tall and Arthur still two inches small, our hero must find a way to gr...With Maltazard now seven feet tall and Arthur still two inches small, our hero must find a way to grow back to his normal size and stop the Evil M once and for all, with the help of Selenia and Betameche.