Blackout world glitch

The "Blackout World" Glitch is a glitch that appearsin [[Final Fantasy VII].

Description
After receiving the Highwind (Final Fantasy VII), while flying around the World Map at any point in the game, the edge of the screen on either side or in front of the airship will appear black as you approach it. Attempting to fly through or past will cause the Highwind to collide and vibrate slightly as if it were trying to fly past an immovable object. Often, the entire screen will black out afterwards, while the World Map music continues to play.

Effects
The "Blackout World" Glitch is a prime example of the importance of saving the game on the World Map. The sole remedy to this glitchis restarting the game and picking upwhere you left off.

Cause
It's possible the "Blackout World" Glitch is caused by an error with the Final Fantasy VII game disk, as shortly after blacking out, the screen will display a miniature replica of a Sony Playstation with a question mark displayed over the disk reader, suggesting there was an error in reading the disk.