This game technically has no end; the player will be given new boards to clear as long as Pac-Man does not lose all of his lives. However, due to a glitch in the game, the right side of the 256th board is a garbled mess of text and symbols rendering the level unplayable. This occurs because of a bug in the subroutine that draws the fruit at the bottom of the screen that indicate the current level. Normally, at most 7 fruits are displayed, regardless of the current screen, but since the level number is stored in a single byte, level 255 ("FF" in hexadecimal) rolls over to 0 in the subroutine, and 256 fruit are drawn, corrupting the bottom of the screen and the entire right half of the maze. Enthusiasts refer to this as the "Final Level," the "Split-Screen Level," or simply as the ending. Although there are claims that someone with enough knowledge of the maze pattern can play through it, it is generally considered impossible to be cleared via legitimate means.
However, in December 1982, an eight-year-old boy named Jeffrey R. Yee received a letter from U.S. President Ronald Reagan congratulating him on a worldwide record of 6,131,940 points, a score only possible if the player has passed the Split-Screen Level Whether or not this event happened as described has remained in heated debate amongst video game circles since its supposed occurrence. In September, 1983, Walter Day, Chief Scorekeeper at the Twin Galaxies Intergalactic Scoreboard, took the U.S. National Video Game Team on a tour of the East Coast to visit video game players who claimed they could get through the "Split-Screen." No video game player could demonstrate this ability. Later, in 1999, Billy Mitchell offered $100,000 to anyone who could provably pass through the Split-Screen Level before January 1, 2000; there is no evidence that anyone could.
Through tinkering, the details of the Split-Screen Level can be revealed. As playable through arcade game emulator MAME some ROMs of the game are equipped with a "rack test" within the DIP switches that will automatically clear a level of all dots as soon as it begins. This method not only makes reaching the long-mythical 256th board easier (thus making detailed analysis possible) but also allows a demonstration of what happens after the board has been cleared:
Because the right side of the map does not exist, Pac-Man and the ghosts can move freely throughout the right side of the screen, barring some of the garbled symbols which are fractured pieces of the maze. Other symbols also entail power pills, which must be eaten for the player to continue (unlike the unglitched boards, if Pac-Man loses a life, the pills on the right side of the screen will reset after being eaten). Because the maze fracture blockades are "placed" in many locations, it is difficult - if not impossible - to locate them all.
If the board is cleared, the game restarts from the first board without error, once again repeating through 256. However, while the power-ups and intermissions repeat from the opening of the game, the monsters will retain their speed and invulnerability to power pellets from the later boards.
