The character Beartank has appeared in 2 other games after his original appearance in Rakugakids. These are Castlevania: Circle of the Moon and Konami Krazy Racers.
Contributed by peanutgamer
The title of the game is a play on the Japanese word 'Rakugaki' which means 'graffiti' or 'doodling', to which the game's art style resembles.
Contributed by KnowledgeBase