The Derby Stallion (ダービースタリオン) – also known in Japan by the portmanteau abbreviation DerbyStal (ダビスタ) – video games are a series of genre-merging horse-racing and business simulation games originally created by ASCII Entertainment, and released by Nintendo. The series comprises 21 games, spans more than 10 console platforms, and is the best-selling horse racing series of all time with total sales topping more than 4 million in Japan.