Sega Saturn
Released in 1988, the Genesis (known as the Mega Drive in Europe, Japan and Australia) was Sega's entry into the fourth generation of video game consoles. In mid-1990, Sega CEO Hayao Nakayama hired Tom Kalinske as president and CEO of Sega of America. Kalinske developed a four-point plan for sales of the Genesis: lower the price of the console, create a U.S.-based team to develop games targeted at the American market, continue aggressive advertising campaigns, and sell "Sonic the Hedgehog" with the console. The Japanese board of directors initially disapproved of the plan, but all four points were approved by Nakayama, who told Kalinske, "I hired you to make the decisions for Europe and the Americas, so go ahead and do it." Magazines praised "Sonic" as one of the greatest games ever made, and Sega's console finally took off as customers who had been waiting for the Super Nintendo Entertainment System (SNES) decided to purchase a Genesis instead. However, the release of a CD-based add-on for the Genesis, the Sega CD (known as Mega-CD outside of North America), was commercially disappointing.
Gain Ground
It was re-released in Radica Games' "TVPlay Legends Vol. II TV Games" compilation. In 2004, the game was remade for the PlayStation 2 as part of Sega's Japan-only "Sega Ages 2500" series as "Sega Ages 2500 Series Vol. 9: Gain Ground". The Mega Drive/Genesis version was released on the European and Australian Wii Virtual Console on February 2, 2007, and was made available in North America on February 5, 2007. "Gain Ground" was included in "Sega Genesis Collection" on the PlayStation 2 and the PSP in 2006 and in "Sonic's Ultimate Genesis Collection" for Xbox 360 and PlayStation 3 in 2009. On June 1, 2010 the game became available on Steam as part of "Sega Mega Drive Classics Pack" (Sega Genesis Classics in the United States). On May 29, 2018, it was included in the console version of the Mega Drive/Genesis Classics Pack.