Sonic Jam
"Sonic Jam" is a compilation which contains the four main "Sonic the Hedgehog" games released on the Sega Genesis: "Sonic the Hedgehog", "Sonic the Hedgehog 2", "Sonic the Hedgehog 3", and "Sonic & Knuckles". Unlike future "Sonic" collections, "Sonic Jam" does not use a Genesis emulator; the games are proper ports, and all are nearly identical to the original Sega Genesis releases, with the exception of minor bug fixes. "Sonic Jam" emulates "Sonic & Knuckles" "lock-on technology"—a special feature that allows the player to merge elements of "Sonic & Knuckles" into previous games, resulting in changes to the level design as well as the choice to play as Knuckles the Echidna in "Sonic the Hedgehog 2" and Tails in "Sonic & Knuckles".
Sonic Spinball
Morawiec believed that the game would face "acceptance challenges" from both fans and the gaming media, as "Sonic the Hedgehog Pinball" strayed away from the traditional platforming genre. After returning home to the United States from Europe, Morawiec was surprised to find that the game had sold well, and was pleased that it benefited from the franchise's popularity. Nonetheless, he regretted that the team had lacked time to "polish" the game properly. After the Game Gear title "Sonic Drift" received poor reviews in Japan, Sega released an 8-bit port of "Sonic Spinball" for the Game Gear in its place worldwide in late 1994. It was also released for the Master System in Brazil and Europe in 1995. The 8-bit version is mostly identical to the Genesis game, albeit with downgraded visuals and different, more platforming-oriented bonus stages. The Master System version was released near the end of the console's lifetime and did not sell well, and became a valuable collector's item.