MileStone Inc.
 MileStone Inc. (株式会社マイルストーン) was a Japanese arcade videogame developer made up mostly of arcade developers who left Compile to form their own company. They were best known for shoot 'em up games developed for the Dreamcast (after the console's official discontinuation) and its arcade counterpart the Sega NAOMI.Some years into the company's lifetime its president Hiroshi Kimura started a bio energy company called MS Bio Energy which was constructing a bio-ethanol plant in Vietnam.