Which studio developed Sonic the Hedgehog 2 for the Sega Genesis?

Sega Technical Institute developed Sonic the Hedgehog 2 for the Sega Genesis. The project was made by a collaboration between Sega’s American development operation and Japanese Sonic staff.

Yuji Naka and Hirokazu Yasuhara moved to the United States to work at Sega Technical Institute, where they collaborated with American developers. Naka led the programming, while Yasuhara handled much of the game design and level work. The international team helped shape the sequel’s larger stages, new mechanics, and expanded presentation.

Sonic the Hedgehog 2 is sometimes confused with Sonic Team USA because that name became associated with later Sonic development. Sonic Team USA was formed afterward and worked on games such as Sonic Adventure. Dimps and Traveller’s Tales also developed other Sonic titles, but neither studio made the original Genesis sequel.

The game launched in 1992 and became one of the Genesis’s defining releases. Its development also introduced Miles “Tails” Prower and helped establish features that became standard in later Sonic games.