*released
https://www.youtube.com/watch?v=zRXp-2rmEwM
You know that old grainy Spaceworld 2000 gamecube footage that showed off Luigi's Mansion, hi-res Link vs. Ganondorf that made everyone upset when Wind Waker was revealed later, and Mario 128? Well someone found a DVD with all that footage in a clean quality and ripped it. (the grainy footage is shown in the middle of the video while the new hi-res version of the footage with sound effects is shown at the end of the video)
It's neat to see >_> It's mostly tech demos/concept obviously but you do see a prototype gamecube controller where the colors are different and the start button is a red sphere. As well as a mobile system (aka "mibile system") that would've let the GBA play online. And an unrelease GCN game called "Ultimate War"
https://gamefaqs.gamespot.com/a/forum/4/4662a989.jpg
https://gamefaqs.gamespot.com/a/forum/4/4199bfe7.jpg
https://gamefaqs.gamespot.com/a/forum/7/7ecffc12.jpg
https://gamefaqs.gamespot.com/a/forum/f/f2bb3549.jpg
https://imgur.com/aMaI3hj https://imgur.com/7PsdJNc
https://imgur.com/eK8vZVn https://imgur.com/u2HR4nG https://imgur.com/nQGM5cZ