gumi Inc.

gumi Inc. is a Japanese mobile game developer and publisher, founded in 2007 by Hironao Kunimitsu. Originally launched as a mobile social network, gumi quickly pivoted to game development, becoming one of the leading studios on Japan’s GREE platform with early hits like Yakuza Wars, Knight Wars, and Pirate Wars.

Headquartered in Shinjuku, Tokyo, gumi has expanded globally with offices in Singapore, South Korea, Taiwan, and the United States, reflecting its ambition to reach a worldwide audience. The company is known for its work on tactical RPGs and anime-inspired mobile games, often collaborating with major partners like Sega, Square Enix, and LINE. Notable titles include Brave Frontier, The Alchemist Code, and more recently, JoJo’s Bizarre Adventure: Ora Ora Overdrive.