Artoon

From the Super Mario Wiki

Artoon
Founded	1999
First Mario Game	Yoshi Topsy Turvy
Latest Mario Game	Yoshi's Island DS

Artoon is the company that made Yoshi Topsy Turvy and Yoshi's Island DS. The name Artoon sounds a lot like Cartoon. Fans were worried that Yoshi's Island DS would be a botched game like Topsy-Turvy, which received critical reception, and were upset at Nintendo for going back to Artoon to recreate one of their greatest games in the franchise. However, many fans were happy to see that they did quite a good job on Yoshi's Island DS.

Companies
AlphaDream | Artoon | Camelot | Capcom | CERO | DIC | ESRB | Fuse | HAL | Hudson Soft | Intelligent Systems | Konami | Namco Bandai | Next Level Games | Nintendo | Paon | PEGI | Rare | Sega | Sora Ltd. | Square Enix | TOSE | Treasure | Valiant