Nintendo 3DS broke Enterbrain's monthly sales record in December. According to Sankei News, the system sold 1,492,931 units over the month. This is the highest single month sales total since Enterbrain started tracking sales in 1997.
Enterbrain's December tracking period covers November 28 through December 25.
3DS has has claimed Enterbrain's top monthly sales spot for seven months running.
PlayStation Vita was the second highest selling system for the month, with 402,794 units. Vita was released on the 17th.