As announced by Nintendo of America this morning, the Nintendo 3DS family of systems have sold 21 million units in the United States since 2011.

The figure comes from NPD, which tracks sales in the US. The Nintendo 3DS family of systems comprises of the original Nintendo 3DS, Nintendo 3DS XL, Nintendo 2DS, New Nintendo 3DS, New Nintendo 3DS XL, and New Nintendo 2DS XL.