Westone Bit Entertainment is a computer game developer founded in May 1986 and based in Mukoujima, Sumida-ku, Tokyo. They are 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 make them sound unreliable.http://www.smspower.org/forums/viewtopic.php?p=44826#44826 The company's name was changed yet again to Westone Bit Entertainment in April 2000. http://review-site.net/developer/xu.html#ウエストンビットエンタテインメント The chief publisher is Ryuichi Nishizawa.

The Westone name is derived from the first characters of the names of company founders Ryuuichi Nishizawa (西澤龍一) (Nishi = West) and Michishito Ishizuka (Ishi = Stone). http://www.smspower.org/forums/viewtopic.php?p=44826#44826

Arcade

• Aurail (Sega)
• Riot City (Sega)
• Tokei Jikake no Aquario (unreleased)
• Wonder Boy (Sega)
• Wonder Boy III: Monster Lair (Sega)
• Wonder Boy in Monster Land (Sega)

Dreamcast

• Akihabara Dennou-gumi Pata Pies! (JP Publisher: Sega)
• DiGi Charat Fantasy (JP Publisher: Broccoli)
• Fish Eyes Wild / Reel Fishing Wild (JP Publisher: Victor; US Publisher: Natsume)
• Shinseiki Evangelion: Ayanami Ikusei Kaikaku (JP Publisher: Broccoli)

Famicom/NES

• Jaws (developed under subcontract with Atlus) (US Publisher: LJN)
• Majin Eiyuuden Wataru Gaiden (JP Publisher: Hudson)

Game Gear

• Monster World II: Dragon no Wana / Wonder Boy: The Dragon's Trap (JP/EU Publisher: Sega)

Mega Drive/Genesis

• Monster World IV (JP Publisher: Sega)
• Wonder Boy V: Monster World III / Wonder Boy in Monster World (JP/US/EU Publisher: Sega)

PC Engine/TurboGrafx-16

• Aoi Blink (JP Publisher: Hudson)
• Appare! Gateball (JP Publisher: Hudson)
• Power Eleven (developed under subcontract with Atlus) (JP Publisher: Hudson)

PlayStation

• Kekkon: Marriage (JP Publisher: Shogakukan Production)
• Milano no Arbeit Collection (JP Publisher: Victor)
• Sotsugyou III: Wedding Bell (JP Publisher: Shogakukan Production)
• Sotsugyou M: Male Graduation: Seitokai Naga no Kareinaru Inbou (JP Publisher: E3 Staff)
• Soukou Kihei Votoms Gaiden: Ao no Kishi Velzelga Monogatari (JP Publisher: Takara)
• Wolkenkratzer: Shinpan no Tou (JP Publisher: Asmik)

PlayStation 2

• Princess Maker 4 (JP Publisher: CyberFront; KR Publisher: Gainax)
• Relaxuma: Ojama Shitemasu 2 Shuukan (JP Publisher: Interchannel)
• Secret of Evangelion (JP Publisher: Jinx)
• Shinseiki Evangelion: Ayanami Ikusei Keikaku with Asuka Hokan Keikaku (JP Publisher: Broccoli)

Saturn

• Kekkon: Marriage (JP Publisher: Shogakukan Production)
• Sotsugyou III: Wedding Bell (JP Publisher: Shogakukan Production)
• Sotsugyou: Album (JP Publisher: Shogakukan Production)
• Willy Wombat (JP Publisher: Hudson)

Toys

• Bowlingual (Takara)
• Dennou Meikyuu Labyrinth (Takara Tomy)
• Himitsu Kichi o Tsukurou (Takara Tomy)
• Myawlingual

Windows

• Chicchana Yuki Tsukai Sugar Desktop Accessories (JP Publisher: Broccoli)
• Galaxy Angel Desktop Accessories (JP Publisher: Broccoli)
• Pita-Ten Desktop Accessories (JP Publisher: Broccoli)
• Renai Typing: Salad Days (JP Publisher: Shogakukan Production)
• Tsuri Baka Nisshi: Baku Tsuri Typing (JP Publisher: Shogakukan Production)
• Waku Waku Joyland (NTT)