- Creator Backlash: While his overall opinion on the game was still very positive, Shigeru Miyamoto felt that the storyline was too dark and focused too much on Rosalina. He therefore mandated that Super Mario Galaxy 2 be Lighter and Softer, and that Rosalina was Demoted to Extra.
- Follow the Leader: Since Galaxy first came out, there has been a large influx of gravity-based flash games across the Internet and on consoles, including Sonic the Hedgehog's own spin on the concept with Sonic Lost World.
- Killer App: Super Mario Galaxy is one of these for the Wii (its sequel, Wii Sports, The Legend of Zelda: Twilight Princess, Mario Kart Wii, and Super Smash Bros. Brawl being the other major ones).
- What Could Have Been: Mahito Yokota initially came up with a more Latin soundtrack—up to 28 pieces had been composed—because he believed it fit in line with the music of previous games. Koji Kondo told him it wouldn't work. Yokota allegedly admitted that the initial direction he took with the music stemmed from his misconception that the Mario games, as "kids" games, ought to have cutesy tunes.
Trivia / Super Mario Galaxy