sethnintendo on 28 June 2014
I have 12GB free with 8 Wii U VC games, 8 eshop games, NSMBU download (from MK8 promotion), Tank! Tank! Tank! and Wii Sports Club free versions which I have yet to try.
One good thing about VC games... They take up barely any space... I still use an old 2 GB SD card for my Wii VC/WiiWare games and I have a shitload of them and still a ton of space left.
