|Founded||January 12, 2000|
|Defunct||October 1, 2019|
|First Super Mario game||Mario & Luigi: Superstar Saga (2003)|
|Latest Super Mario game||Mario & Sonic at the Olympic Games Tokyo 2020 (2019)|
AlphaDream Corporation, Ltd., or AlphaDream (formerly known as AlphaStar), was a Japanese video game development studio founded on January 12, 2000, as a second-party developer for Nintendo. AlphaDream developed all five games in the Mario & Luigi series, along with Mario & Luigi: Superstar Saga + Bowser's Minions, which is a remake of the first game in the series, and Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey, a remake of the third game in the series. The company's staff included prominent developers from Square Co., such as Chihiro Fujioka and Yoshihiko Maekawa, who worked as directors on Super Mario RPG: Legend of the Seven Stars.
AlphaDream's first Super Mario game, Mario & Luigi: Superstar Saga, draws heavy inspiration from Tomato Adventure, which includes borrowing the art style, the strong resemblance of some characters (such as Hermie III being based on the Yadotsurī enemy), and similar sound effects. Some files from Tomato Adventure's soundtrack appear unused in Mario & Luigi: Superstar Saga's files.
On October 1, 2019, the company ceased operations immediately after filing for bankruptcy, citing sluggish revenues and the high development costs exceeding overall debt. The final game worked on by AlphaDream was Mario & Sonic at the Olympic Games Tokyo 2020, which was released a month after the company's bankruptcy.
Super Mario games developed
|Mario & Luigi: Superstar Saga||2003||Game Boy Advance|
|Mario & Luigi: Partners in Time||2005||Nintendo DS|
|Mario & Luigi: Bowser's Inside Story||2009||Nintendo DS|
|Mario & Luigi: Dream Team||2013||Nintendo 3DS|
|Mario & Luigi: Paper Jam||2015||Nintendo 3DS|
|Mario & Luigi: Superstar Saga + Bowser's Minions||2017||Nintendo 3DS|
|Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey||2018||Nintendo 3DS|
|Mario & Sonic at the Olympic Games Tokyo 2020||2019||Nintendo Switch|
- (October 2, 2019) 『マリオ＆ルイージRPG』など開発 アルファドリームが破産開始 - Yahoo Japan. (Wayback Machine) Retrieved May 26, 2020.