Sonic Chaos

Sonic the Hedgehog Chaos is a 1993 side-scrolling platform video game published by Sega for the Master System and Game Gear. Players control Sonic the Hedgehog and his sidekick Miles "Tails" Prower in their quest to retrieve the Chaos Emeralds from Dr. Robotnik, who has stolen them to construct nuclear weapons. Gameplay involves running through stages, collecting rings, and defeating enemies. It is largely based on the Master System version of Sonic the Hedgehog 2 and is thus considered a follow-up to that game. Chaos also marks the debut of Tails as a playable character on the Game Gear. 

Developed by Japanese studio Aspect Co., Chaos is the first original Sonic game made for a handheld, instead of a port or remake of an already-existing game. Based on their prior experience on producing Sonic games, Aspect had a far better grasp on how to design Chaos and were able to build on its predecessor’s mechanics and make the gameplay generally faster. Chaos received a generally positive reception initially, with its levels and gameplay being praised, however in recent years it has gained a more average response for its unimpressive presentation and levels being of lackluster quality, alongside its slow framerate. A direct sequel, Sonic the Hedgehog: Triple Trouble, was released in 1994.