FlyhighWorks released today the Nintendo 3DS version of the Gurumin 3D in Japan. The game is the official port version of the PC Gurumin RPG game and you can buy it from the eShop for 1500 Yen (with tax).
It should be noted that with the game, 5 official Gurumin 3D Nintendo 3DS themes also released. You can buy them one by one for 200 Yen (with tax). You can’t buy them in package price.
The English version of the Gurumin 3D by the way already available in the US/EU eShop not just in Japan.