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".
List of Sega video game consoles
In Brazil, where the Genesis never ceased production, Tectoy released a portable version of the Genesis with twenty built-in games on December 5, 2007. Another Tectoy variant of the console called "Mega Drive Guitar Idol", released in 2009 in Brazil, includes two six-button joypads and a guitar controller with five fret buttons. That year, AtGames began producing two new Genesis variants in North America and Europe: the Firecore, which can play Genesis cartridges as well as preloaded games; and a handheld console, the Sega Gopher, as well as a dedicated motion console, the Sega Zone, preloaded with 20 Genesis games. Companies such as Radica Games have released compilations of Genesis games in "plug-and-play" packages resembling the system's controller.