The Mega Drive (top), known as the Sega Genesis (bottom) in North America, is a 16-bit home video game console developed and sold by Sega Enterprises, Ltd. Using hardware adapted from Sega's System 16 arcade board, it was first released in 1988 and supported a library of more than 900 games. Though sales were poor in Japan, the system achieved considerable success in North America, Brazil, and Europe. The release of the Super Nintendo Entertainment System two years after the Genesis resulted in a fierce battle for market share in the United States and Europe that has often been termed as a "console war" by journalists and historians.Photograph: Evan Amos