Justin Manning - is a video game producer. Justin Manning began his career in 2014 and has worked for companies such as Sumo Digital and Sony Computer Entertainment. Justin Manning's first game was LittleBigPlanet 3 which was released 9 years ago. Best Game Justin Manning contributed to was LittleBigPlanet 3. Justin Manning's latest work is LittleBigPlanet 3 which was released 9 years ago.