What is the last level in Pac Man?

The last level in the original Pac-Man arcade game is Level 256, which is known as the "kill screen." At this point, the game becomes unplayable due to a programming error that causes the right half of the screen to be filled with garbled graphics, making it impossible for players to navigate through the maze effectively. Players typically achieve this level after accumulating a high score, but it is not designed to be completed.