Sonic Blast

Sonic Blast is a video game in the Sonic the Hedgehog series developed by Aspect and published by Sega for the Sega Game Gear. It is known as G Sonic in Japan. It was released in November of 1996 for both North American and European markets. A Japanese release followed later that year on December 13. The game was also ported to the Sega Master System in Brazil by TecToy and released in December 1997 which is also the last game made for that system. Sonic Blast was later compiled with other Sonic titles in Sonic Mega Collection Plus and Sonic Adventure DX, and a demo of its ending can be unlocked in Sonic Gems Collection.

Sonic Chaos

Sonic Chaos (known as Sonic & Tails in Japan and Sonic the Hedgehog Chaos in Europe) is a video game for the Sega Master System and Sega Game Gear, developed by Aspect and published by Sega in 1993. It was the last platform based Sonic game released for the Master System in Europe.

It was re-released in 2004 as an included game in Sonic Mega Collection Plus on the PlayStation 2, Xbox and PC, and is also included as an extra on Sonic Adventure DX: Director's Cut for the Nintendo GameCube and PC. To unlock the game, the player has to collect 60 emblems as all of the playable characters. All these re-releases are the Game Gear version.

Sonic Chaos is notable for the fact that it is the first 8-bit Sonic title to feature Tails as a playable character, and also the first in the series to allow the player to manually control his flight.

Sonic the Hedgehog 2 (8-bit)

Sonic the Hedgehog 2 is a side-scrolling platform video game developed by Aspect and released by Sega for their Master System and Game Gear formats. The Master System version was released in Brazil on October 25, 1992, and in Europe around the same time. The Game Gear version was released in Europe on October 29, 1992, in North America on November 17, 1992 and in Japan on November 21, 1992. Being released before the 16-bit version for the Mega Drive (Genesis), the 8-bit editions of Sonic the Hedgehog 2 represent the debut of character Miles "Tails" Prower, Sonic the Hedgehog's best friend who became a recurring character in the series.

Sonic Spinball

Sonic the Hedgehog Spinball (also known as Sonic Spinball) is an adventure pinball game in the Sonic the Hedgehog series. It was originally released for the Sega Mega Drive/Genesis in 1993 and later ported to the Game Gear system. It was also released in 1994 on the Master System in Europe by Sega Europe (which is one of the last games made for the system and is quite hard to find), this was later released in Brazil by TecToy and in Portugal by Ecofilmes in 1995. This version is a port of the Game Gear version. The Mega Drive/Genesis version was released on the Wii's Virtual Console on March 12, 2007 in North America and April 5, 2007 in Europe. The game is a pun on pinball and Sonic's famous spin move. It is the only Sonic game to feature characters from the Saturday morning cartoon Sonic the Hedgehog, though only in cameos. The game's score was composed by Howard Drossin.

Dr. Robotnik's Mean Bean Machine

Dr. Robotnik's Mean Bean Machine is a Sonic the Hedgehog video game. The game is a modified version of the Japanese puzzle game Puyo Puyo. Unlike other games in the series, it takes place in the same universe as the Adventures of Sonic the Hedgehog cartoon.
The game is played with two opponents trying to connect as many chains of four or more similarly colored beans as possible in a large grid. As higher chains are achieved, Refugee Beans are sent to the other side. This can only be removed when a neighboring group of beans is matched. The winner is the one whose beans do not reach the top of the grid. There are various modes that allow players to battle each other in various difficulty settings. These determine speed, the initial number of Refugee Beans, and other various things.