Grezzo is a Japanese developer studio founded in December 2006 in Shibuya, Tokyo.
Grezzo is a relatively new development studio that has worked on a small number of games such as Line Attack Heroes. Koichi Ishii began helming the company in April of 2007. The studio has worked directly with Nintendo on several projects, including a game for the 3DS's StreetPass Mii Plaza, as well remakes of several Legend of Zelda titles, including Four Swords Anniversary Edition, Ocarina of Time 3D and Majora's Mask 3D.