Söldner-X is a series of two downloadable horizontal-scrolling Shoot Em Ups for the PlayStation 3. With the first game also on PC. Developed by SideQuest Studios and published by eastasiasoft. In Söldner-X: Himmelsstürmer, humanity has been nearly overrun by a mysterious corruption that transforms all technology and organic material it comes into contact with. Their last hope is a lone mercenary issued with the Söldner-X prototype ship.