Westone Bit Entertainment (ウエストン·ビット·エンタテインメント, Weston Bitto Entateinmento) was a computer game developer founded in May 1986 and based in Mukoujima, Sumida-ku, Tokyo. They were most famous for their first work Wonder Boy and the Monster World series. Originally called Escape, the company was renamed to Westone as the word Escape made them sound unreliable. The company's name was changed yet again to Westone Bit Entertainment in April 2000. The chief publisher was Ryuichi Nishizawa.