"Nekketsu Kōha Kunio-kun" ("Hot Blooded Tough Guy Kunio"), a side-scrolling beat-em-up released in 1986 about a high school student who fought thugs and delinquents from other schools, was the company's first big hit in Japan. "Kunio-kun" was released in the west as "Renegade" with the game's graphics changed to make the game marketable in the overseas market. Technōs would then produce a Nintendo Entertainment System version of the game, which would be Technōs' first game for the home console market. Technōs Japan's subsequent arcade beat-em-up, "Double Dragon", was a big success worldwide when it was released in 1987, leading to the production of an NES version of the game, as well as licensed versions by other companies for various platforms.