Onion Egg started in the late 90s creating licensed strategy RPGs for properties like Slayers and Mon-Colle. In the 2000s they switched to developing mobile games for both Japan and an international market as well as various web applications. By the start of 2008 the company had gone defunct.
Onion Egg entered the gaming scene in 1998 and has 1 titles tracked on PlayPile. Their catalog primarily spans Adventure, Role-playing (RPG), Strategy, with additional titles in other genres. Their games are available on PlayStation and Sega Saturn.