GamesCampus announces closed beta testing of Heroes in the Sky will end tomorrow, when the open beta of this World War II aerial combat MMOTPS will begin. Word is: "Heroes in the Sky is the highly-anticipated aerial combat game that features hundreds of thrilling war planes and fast-paced action taking place above the battlefields of WWII. New and existing players are invited to participate in the open beta and gain access to the entire WWII third-person shooter."