Culture Brain is a Japanese developer and publisher with approximately 84 titles whose NES-era output is best remembered for its martial arts action games. The Flying Dragon sub-series, including Flying Dragon: The Secret Scroll and Flying Warriors, blended side-scrolling brawling with RPG elements in ways that felt distinct at the time. Little Ninja Brothers and Ninja Boy 2 further cemented the studio's identity around colourful, kung-fu-flavoured adventure.