Sega-AM3 is a division of Japanese video game developer Sega Corporation. The development team has produced some popular arcade game and video games, including Virtual On, NASCAR Arcade, Crazy Taxi, Astro Boy: Omega Factor (along with Treasure), Virtua Tennis, and the Initial D Arcade Stage series. In 2000, as a part of a restructuring of Sega, they were renamed Hitmaker.
In 2000, as a part of a restructuring of SEGA, SEGA-AM3 was renamed Hitmaker.
In October 2003, SEGA Rosso was merged into Hitmaker.