My Hero is a side-scrolling beat 'em up video game for the Sega Master System, originally released as an arcade game by Sega in 1985. The player controls a character who must rescue his girlfriend from a city gang. The gameplay involves defeating waves of enemies using various attacks and moves, navigating through levels filled with obstacles and adversaries. It's known for its challenging difficulty, 8-bit graphics, and catchy chiptune music. As an early example of the genre, My Hero is a reflection of arcade gaming in the mid-80s.