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Founded January 12, 2000
Founder Tetsuo Mizuno
Headquarters Wako Miyamasuzaka Building, 2-19-8, Shibuya, Tokyo, Japan

AlphaDream Corporation, Ltd., or AlphaDream (formerly known as AlphaStar), was a Japanese video game development studio who developed video games for Nintendo's handheld system. They were founded on January 12, 2000 as a second party developer for Nintendo. The company's staff included prominent former developers from Square Co., such as Chihiro Fujioka.

AlphaDream is best known for having developed all five games in the Mario & Luigi series, along with Mario & Luigi: Superstar Saga + Bowser's Minions and Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey, which are remakes of Mario & Luigi: Superstar Saga and Mario & Luigi: Bowser's Inside Story respectively.

On October 1, 2019, the company ceased operations immediately after filing for bankruptcy, citing sluggish revenues and the high development costs exceeding overall debt.[1]


Title Year released Publisher Console(s)
Koto Battle: Tengai no Moribito 2001 AlphaDream Game Boy Color
Tomato Adventure 2002 Nintendo Game Boy Advance
Hamtaro: Rainbow Rescue 2003
Mario & Luigi: Superstar Saga
Hamtaro: Ham-Ham Games 2004
Mario & Luigi: Partners in Time 2005 Nintendo DS
Tottoko Hamtaro Nazo Nazo Q Kumonoue no ? Jou
Tottoko Hamutaro Haai! Hamu-Chans no Hamu Hamu Challenge! Atsumare Haai! 2007 Marvelous Interactive
Mario & Luigi: Bowser's Inside Story 2009 Nintendo
PostPet DS Marvelous Entertainment
Mario & Luigi: Dream Team 2013 Nintendo Nintendo 3DS
Mario & Luigi: Paper Jam 2015
Mario & Luigi: Superstar Saga + Bowser's Minions 2017
Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey 2019
Kedama no Gonjiro: Fit & Run ForwardWorks Corporation Android
Mario & Sonic at the Olympic Games Tokyo 2020 Sega Nintendo Switch