Similar to the previous games, Goku SSJ over Sonic is a fan-made Game Boy Advance game using the Sonic game engine and featuring Goku in his Super Saiyan (SSJ) form. It's a non-official title distributed mainly through online ROM sharing communities, therefore, it is developed by individuals or small teams and is not associated with official publishers. The gameplay will largely be based on the Sonic engine. 

Goku SSJ over Sonic

Goemon New Age Shutsudou! (J)(Eurasia)