Accidental Innuendo: The game is supposed to say the words "Hello, I'm turned on" when powered up. It didn't cross the minds of the developers that the phrase could be taken a different way.
Difficulty Spike: The final set of levels in Rebooted gets hit with this, especially near the end when you can expect four Sams to pop up at once and effectively undo all of your progress up to that point in the stage.
Fan Nickname: Coily is sometimes known as Carrot Ends (alternately spelled Carrot Ens) because the ends of him look like two pink carrots rather than the head and tail of a snake and the noise he makes sounds like "carrot ends, carrot ends..." in the Atari 2600 version.
While Rebooted was well-received on the mobile side, the console ports have notoriously unreliable controls, which can make it very easy to accidentally steer Q*bert off the side of the course.
In a lesser example, the "Q*bert Classic" mode of Rebooted deletes all of Q*bert's speech samples from the original game, and also most of the game's music cues. It's been suggested that the former was an act of bowdlerization, to remove any profane-sounding speech samples... which they still managed to mess up, by leaving Ugg's and Wrongway's speech samples in, at least one of which can sound quite sweary.
Serial Numbers Filed Off: Orion Software's early PC port is called "J-Bird". Q*bert is replaced with a bird, some enemies with cats, the discs with wings and so on.
