https://thenextweb.com/gaming/2018/10/30/nintendo-switch-outsold-gamecube/

The growth of the Nintendo Switch has been nothing short of meteoric, easily surpassing those of the disappointing Wii U within months. Now, according to a new report from Nintendo, the Switch’s lifetime sales just surpassed those of the GameCube.

The Switch’s lifetime sales, as of this writing, have reached over 22 million units, which surpasses not only the Wii U’s 13.6 million units, but the GameCube’s 21.7 million units. For reference, the next most successful Nintendo console was the Nintendo 64 at 33 million units and the most successful (in non-handhelds) is the Wii at 101 million units.