Sonic the Hedgehog Pocket Adventure
In August 1999, SNK announced that they were collaborating with Sega to develop a "Sonic the Hedgehog" game for their Neo Geo Pocket Color handheld system. The game was developed by SNK, with supervision from Yuji Naka and Sonic Team at Sega. This marked the first time Sega was directly involved in the development of a "Sonic" game for a non-Sega platform. The team planned for "Sonic Pocket Adventure" to be a return to the classic 2D gameplay style found in the "Sonic" games on the Sega Genesis. In particular, many game design and visual elements are borrowed from "Sonic 2". The game's background music tracks are also 8-bit renditions of music from "Sonic 3". "Sonic Pocket Adventure" was released first in North America on December 4, 1999. SNK released a system bundle with the game included for the holiday season. The game was released in Japan two weeks later, and in Europe in February 2000.
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.