By now lots of people know, in classic Sonic the Hedgehog games, if you wait a few seconds without touching a control, Sonic will look at you and tap his foot impatiently.
Fewer people know that Sonic CD goes a step farther. If you wait three minutes without moving Sonic, he’ll say aloud “I’m outta here!” (his first voiced line in the series!) and jump off the screen. What’s more, this ends your game. As Sonic abandons his journey, the game will deduct all of his lives, and the GAME OVER notice appears immediately. The hedgehog has been offended! Learn to pause the game next time, player.
The gag seems like it may have been hastily programmed, because there are a lot of quirks to the animation that play around oddly, and conflict in some ways, with the other aspects of the game. Camamania shows off all the bugs and glitches around the joke in a 7½-minute video.
Among the cases are when Sonic’s jump causes him to trigger a boss fight, to enter an acceleration tube, and when it causes him to cross the level-end sign. Some of them only apply to the MegaCD original, having been fixed in the US version, and some have different behavior in the 2011 remake. Interesting behavior, so says I!