Yoshiaki Koizumi marks a milestone in 2026 as he celebrates his 58th birthday and 35 years with Nintendo.
Currently Senior General Manager at Nintendo EPD and a Senior Executive Officer at Nintendo, Koizumi has been a visible and influential presence across Nintendo Direct presentations and in the development of some of the company’s most important franchises.
Koizumi joined Nintendo in April 1991 and early in his career contributed to The Legend of Zelda: A Link to the Past, helping shape elements of the game’s backstory.
He later contributed to Link’s Awakening alongside Kensuke Tanabe.
Across the 1990s and 2000s Koizumi held roles on landmark Nintendo titles: he worked as an assistant on Super Mario 64 (Nintendo 64, 1996) and The Legend of Zelda: Ocarina of Time (Nintendo 64, 1998) and Majora’s Mask (Nintendo 64, 2000).
His first lead director credits include Super Mario Sunshine (GameCube, 2002) and Donkey Kong Jungle Beat (GameCube, 2004/2005).
Koizumi’s best-known directorial work is Super Mario Galaxy (Wii, 2007), a title that received wide critical acclaim and strengthened his reputation for adding narrative and design flourishes to Mario’s 3D outings.
Since that period he has served primarily as a producer and supervisor on major Mario projects, including Super Mario 3D World (Wii U, 2013) and Super Mario Odyssey (Nintendo Switch, 2017).
Industry observers note Koizumi’s long-term influence at Nintendo: "Koizumi is widely regarded as one of Nintendo’s most influential figures," many developers and commentators say, pointing to his mix of creative direction, production leadership, and on-camera presence during Nintendo Direct broadcasts.
Koizumi also collaborated with Zelda series producer Eiji Aonuma in public videos and interviews following major releases, exemplifying Nintendo’s practice of having senior creators speak directly to audiences via Nintendo Direct and other channels.
A comprehensive listing of Koizumi’s credits is available on databases such as MobyGames.
From manual writing on early 1990s Zelda titles to guiding Mario’s modern 3D evolution and holding executive leadership at Nintendo EPD, Koizumi’s career spans hardware generations from Super Nintendo and Nintendo 64 through Wii, Wii U, and Nintendo Switch.
Happy birthday to Yoshiaki Koizumi — his work remains integral to Nintendo’s development history and ongoing platform lineup on the Nintendo eShop and Nintendo Direct stage.
Currently Senior General Manager at Nintendo EPD and a Senior Executive Officer at Nintendo, Koizumi has been a visible and influential presence across Nintendo Direct presentations and in the development of some of the company’s most important franchises.
Koizumi joined Nintendo in April 1991 and early in his career contributed to The Legend of Zelda: A Link to the Past, helping shape elements of the game’s backstory.
He later contributed to Link’s Awakening alongside Kensuke Tanabe.
Across the 1990s and 2000s Koizumi held roles on landmark Nintendo titles: he worked as an assistant on Super Mario 64 (Nintendo 64, 1996) and The Legend of Zelda: Ocarina of Time (Nintendo 64, 1998) and Majora’s Mask (Nintendo 64, 2000).
His first lead director credits include Super Mario Sunshine (GameCube, 2002) and Donkey Kong Jungle Beat (GameCube, 2004/2005).
Koizumi’s best-known directorial work is Super Mario Galaxy (Wii, 2007), a title that received wide critical acclaim and strengthened his reputation for adding narrative and design flourishes to Mario’s 3D outings.
Since that period he has served primarily as a producer and supervisor on major Mario projects, including Super Mario 3D World (Wii U, 2013) and Super Mario Odyssey (Nintendo Switch, 2017).
Industry observers note Koizumi’s long-term influence at Nintendo: "Koizumi is widely regarded as one of Nintendo’s most influential figures," many developers and commentators say, pointing to his mix of creative direction, production leadership, and on-camera presence during Nintendo Direct broadcasts.
Koizumi also collaborated with Zelda series producer Eiji Aonuma in public videos and interviews following major releases, exemplifying Nintendo’s practice of having senior creators speak directly to audiences via Nintendo Direct and other channels.
A comprehensive listing of Koizumi’s credits is available on databases such as MobyGames.
From manual writing on early 1990s Zelda titles to guiding Mario’s modern 3D evolution and holding executive leadership at Nintendo EPD, Koizumi’s career spans hardware generations from Super Nintendo and Nintendo 64 through Wii, Wii U, and Nintendo Switch.
Happy birthday to Yoshiaki Koizumi — his work remains integral to Nintendo’s development history and ongoing platform lineup on the Nintendo eShop and Nintendo Direct stage.