Platform: Nintendo GameCube

Nintendo ran a contest to help promote the upcoming release of the GameCube called "What would YOU do for a Nintendo GameCube?" where fans were picked to perform stunts that they'd chosen themselves to win a GameCube, Game Boy Advance, a games package, and USD. Some of the acts which were picked by entrants were to paint Nintendo logos with their tongue, juggling three consoles whilst dressed as a game character, painting and shaving themselves to be a Pikmin, and eating a GameCube made of spam, chocolate syrup, and cat food.

Two of Nintendo's biggest franchises, Mario and The Legend of Zelda, have water-centric games on the Gamecube. Some have speculated this is somehow related to the GameCube's early project name "Dolphin".

When the GameCube was released, Nintendo targeted a 50 million sale goal by 2005, in order to compete with Sony and Microsoft. The consoles ended up only reaching 21.74 million units sold (estimate).

The GameCube's SDK has strings that reference all of the known N64 peripherals, including obscure ones such as the keyboard and mouse, suggesting that the GameCube was once planned to have support for Nintendo 64 peripherals.

A tech demo developed by Shigeru Miyamoto over a number of years titled "Mario 128" was shown off at Nintendo's Spaceworld 2000 trade show and was designed to showcase the GameCube's ability to utilize multiple AIs. The demo featured 128 Marios dismantling a pseudo-8 bit Mario sprite composed of several blocks by picking up and carrying them away. This project had a tumultuous development cycle with little to no details coming out over the years until 2007 when he revealed at a GDC Keynote that some parts of the project were utilized in two games he produced in the 2000s. The general concept and some other parts of Mario 128 were developed into Pikmin after Miyamoto asked his team to create an entirely new game that would be nothing like a sequel to a Mario game. As for the second game, the ability to warp the terrain seen in the tech demo as well as "different sizes of spherical items" influenced the free-form gravity and ability to walk around entire planets in Super Mario Galaxy.

Before it was released, a tech demo for the Gamecube was developed which featured an explorable version of Princess Peach's castle. This demo was later leaked online.

The working title for the GameCube was the Dolphin. As a result, many games from the GameCube era reference this, such as Super Mario Sunshine's setting being in the shape of a dolphin (the island is also named Isle Delfino; "Delfino" is Italian for "Dolphin") and Captain Olimar's ship in Pikmin being named the S.S. Dolphin. The GPU of the machine is named "Flipper", another reference to the console's codename.

The soft reflections used for the GameCube's startup animation and menu are the same texture file that Ocarina of Time and Majora's Mask use for shiny items.

There are two hidden alternate start-up sounds which can play after you power-up the console. The first one features a squeaking sound and a child's laughter, which plays when you have a controller in port 1 with the "Z" button hold down as you power-up. The second is of Japanese instruments played which activates via the same method but instead with four controllers.

There is a microscopic image of a Dolphin within a computer chip inside the GameCube, referencing the GameCube's codename during development.

The GameCube's BIOS menu has slow, seemingly random ambient background music.

This background music, when sped up to sixteen times its normal speed, is actually the intro jingle for the Famicom Disk System, a Famicom add-on released by Nintendo in 1986.