Kabushiki Doujou: The Stock Speculation is a stock trading simulation game developed by Hect and released for the Nintendo Entertainment System (NES) on May 2, 1989. Players aim to build a profitable stock portfolio through smart investments, reach set financial targets within a time limit by buying, selling and managing stocks. It features many public-domain classical tracks, like an 8-bit version of Bach’s "Air on the G String" on the title screen.