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Hirokazu Yasuhara (安原 広和, Yasuhara Hirokazu, born October 12, 1965) (also credited as Carol Yas) is a Japanese video game designer. He is best known for designing the gameplay and stages of the initial Sonic the Hedgehog video games for Sega Genesis in the 1990s, based on technical demos and engines programmed by Yuji Naka.[1] Yasuhara stayed with Sega until the late 1990s. He then joined Naughty Dog, working on the Jak and Daxter series and Uncharted: Drake's Fortune, collaborating again with former Sega employee Mark Cerny. He was the senior design director at Namco Bandai Games America. In April 2012, Yasuhara joined Nintendo where he accepted a position at the Nintendo Software Technology division.[2] In 2016 he joined Unity Technologies.[citation needed]

Hirokazu Yasuhara
Hirokazu yasuhara gdc 2018.jpg
Yasuhara at the 2018 Game Developers Conference
Native name
安原 広和
BornOctober 12, 1965
Other namesCarol Yas
OccupationGame designer
Notable work
Sonic the Hedgehog series

Production historyEdit


  1. ^ "75 Power Players". Next Generation. Imagine Media (11): 54. November 1995.
  2. ^ Curtis, Tom (April 4, 2012). "Sonic the Hedgehog co-creator Hirokazu Yasuhara joins Nintendo". Gamasutra. Retrieved April 4, 2012.