Sonic the Hedgehog is a platforming action video game. Developed by Sonic Team in 1991, the blue blur himself would become one of gaming's universal icons, and became the first series to stand as a serious rival to Nintendo's Mario series, flaming the legendary console wars.

A classic 2-D side-scrolling platformer, you control Sonic, a blue-colored hedgehog that runs pretty darn fast across the stages (zones as they are called in the game). Scattered throughout the zones are golden rings that Sonic can collect, which allows him to not only take damage, but allow access to special stages. If completed, the special stage will grant Sonic one of six Chaos Emeralds.

Dr. Ivo Robotnik, an evil genius, realizes the power of the Chaos Emeralds, and wants them for himself. As such, Robotnik traps the innocent woodland creatures of South Island. In response, Sonic attempts to free the creatures and collect the emeralds for himself in order to stop Robotnik's plans.

This hack makes the rotation of the bonus stage a lot more smoother, like how it is in the mobile ports and Sonic Origins.

Sonic The Hedgehog (Japan, Europe, Korea).bin
SHA-1: 69E102855D4389C3FD1A8F3DC7D193F8EEE5FE5B
CRC32: AFE05EEE
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Sonic The Hedgehog (USA, Europe).bin
SHA-1: 6DDB7DE1E17E7F6CDB88927BD906352030DAA194
CRC32: F9394E97
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Sonic The Hedgehog (Japan) (En) (Virtual Console).bin
SHA-1: 95B6AAC7E11BB2D908AAFA06973FFEB45817A992
CRC32: 6382B2C5

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