Steel Empire (originally released as Koutetsu Teikoku (鋼鉄帝国) in Japan, and otherwise known in various English materials as The Steel Empire or Empire of Steel) is a horizontally scrolling shooter released on the Sega Genesis 1992. Versions for the Game Boy Advance were released in 2004 and a Nintendo 3DS in 2014. The game is scheduled to release for Nintendo Switch in 2023. The original leaked Japanese arcade beta version (now rare and the source code of which is believed lost), the popular Mega Drive version and the GBA remake were all critically well received.