2015-06-07 "EPIC’s Unreal Engine Open World: Behind the Scenes" @ fxguide (GDC2015 での Unreal Engine 4 のオープンフィールドデモの解説) UNREAL_ENGINE GAME_GFX http://www.fxguide.com/featured/epics-unreal-engine-open-world-behind-the-scenes/