What is Single Blade Online? Single Blade Online (SBO) is a single-player ARPG set in a medieval fantasy world playable within Fortnite. It packs the exhilaration of "hunting × sword action" into a compact experience: slash enemies with your blade while progressing through hunting missions, culminating in an epic boss battle against a dragon. SBO's theme is Medieval Fantasy × Hunting × Sword Action. We designed fields where "run, slash, dodge" shines, featuring combat in flower-dotted grasslands and open terrain. Check out the trailer below for a quick glimpse of the game's world, combat tempo, and the intensity of the ...