Club Nintendo in Japan is running a special campaign titled 'Chotto Mario na Nintendo 3DS Present Campaign'. After registering two 3DS titles on the Japanese Club Nintendo site, gamers are automatically entered in the running to win a limited edition Mario designed 3DS hardware unit.

The designs are based on Mario characters, one designed after Princess Peach’s dress, Mario’s overalls, and Toad’s head. Each unit is limited to 1,000 pieces for a total of 3,000 units. Gamers can register up to ten games which will give them five chances to win the limited edition hardware.

The campaign is valid for Games registered between October 1 and January 15, 2012.