The result: The ring counter will underflow to 65535. If the player enters a slot machine as Super Sonic with less than fifty rings and gets three Eggman icons, the rings will drain to zero, but Super Sonic's ring drain will still be active.Slots are properly implemented in Beta 5. Slot machines don't work yet in Beta 4: The cage object that runs the slots and calculates the results (Object D6) has been coded, but the object that actually gives the reward / penalty (Object DC) has not.A number of Sonic 2 prototypes have leaked since the release the first, discovered in 1999, played a significant role in the development of a game datamining community.This is a sub-page of Proto:Sonic the Hedgehog 2 (Genesis)/Beta 4 to Beta 8. Sonic 2 has been rereleased on various platforms via compilations and emulation, and a remake for iOS and Android devices, developed using the Retro Engine, was released in December 2013. Sonic the Hedgehog 3 and Sonic & Knuckles followed in 1994. It continues to receive acclaim and is considered one of the greatest video games of all time. Sonic 2 solidified Sonic as a major franchise and helped keep Sega competitive during the console wars of the 16-bit era in the early 1990s. With six million copies sold worldwide, it is the second-bestselling Genesis game behind the original Sonic the Hedgehog. Sonic 2 broke video game sales records and became the fastest-selling game at the time, grossing over $450 million. Critics considered Sonic 2 an improvement over the first game and praised the visuals, level design, gameplay, and music, though the low difficulty level and similarities to its predecessor were criticized. It was released in November 1992 to acclaim and received numerous year-end accolades, including two Golden Joystick Awards. Sonic 2 was widely anticipated, and Sega backed it with an aggressive $10 million marketing campaign. As with the first game, Masato Nakamura, a member of the J-pop band Dreams Come True, composed the soundtrack. The development suffered setbacks, including cultural differences between the Japanese and American staff, and numerous levels were cut due to time constraints and quality concerns. Sonic 2 was intended to be faster and more ambitious than the first game. Members of the original development team-including programmer Yuji Naka and designer Hirokazu Yasuhara-moved from Japan to California to join the project.

After Sonic the Hedgehog greatly increased the popularity of the Genesis in North America, Sega directed STI founder Mark Cerny to start Sonic 2 in November 1991.

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