Publisher tinyBuild and developers Hologryph and TowerHaus have announced that SAND: Raiders of Sophie will officially launch on Steam on June 10, following its appearance during the Summer Game Fest Showcase. Players eager to jump into the action don’t have to wait, as the game’s open Server Slam playtest is available now through the weekend. Set in an alternate-history dieselpunk universe, SAND: Raiders of Sophie takes place on the devastated planet Sophie, where an ecological catastrophe has completely evaporated the oceans. Humanity’s survivors now roam the endless deserts aboard towering mechanical walkers known as Tramplers, searching for valuable resources while…