![Forest of Illusion on Twitter: "We've preserved a total of five Unit Inspection/Aging discs for the Nintendo GameCube! The purpose of these discs was to test and diagnose various functions on systems Forest of Illusion on Twitter: "We've preserved a total of five Unit Inspection/Aging discs for the Nintendo GameCube! The purpose of these discs was to test and diagnose various functions on systems](https://pbs.twimg.com/media/FZ9Wd_rUUAUKUNK.jpg:large)
Forest of Illusion on Twitter: "We've preserved a total of five Unit Inspection/Aging discs for the Nintendo GameCube! The purpose of these discs was to test and diagnose various functions on systems
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Amazon.com: HUAYUWA 1PCS Mini Disc (Version: NTSC-U) Fits for Gamecube SD2SP2 Game CD Boot Disk Spare Parts : Video Games
![National Videogame Museum on Twitter: "Check out this prototype Gamecube disc for use with the Nintendo Gamecube NR Reader development hardware. This disc in particular contains a build of Acclaim's Extreme-G 3. # National Videogame Museum on Twitter: "Check out this prototype Gamecube disc for use with the Nintendo Gamecube NR Reader development hardware. This disc in particular contains a build of Acclaim's Extreme-G 3. #](https://pbs.twimg.com/media/EWPW576WkAAUTEV.jpg:large)