モノリスソフト
, trading as Monolith Soft, is a Japanese video game development studio originally owned by Namco (later Bandai Namco) until being bought out by Nintendo in 2007. The company was founded in 1999 by Tetsuya Takahashi with the support and cooperation of Masaya Nakamura, the founder of Namco. Their first project was the "Xenosaga" series, a spiritual successor to the Square-developed "Xenogears". Multiple Square staff would join Takahashi at Monolith Soft including Hirohide Sugiura and Yasuyuki Honne.