Pac-Man Plus/Homebrew ports

Atari 2600
AtariAge.com forum member PacManPlus is a programmer who is largely responsible for converting many versions of Pac-Man on various Atari platforms in to Pac-Man Plus. In this case, he took Rob Kudla's Ms. Pac-Man hack known as Mr. Pac-Man, and further hacked it into Pac-Man Plus. Meanwhile, forum member Nukey Shay has been diligently hacking the core of Ebivision's Pesco ROM for the 2600 in to Pac-Man, and added the variations contained in Pac-Man Plus (as well as Hanglyman) in to the program.

Atari 5200
PacManPlus took the well received conversion of Pac-Man for the Atari 5200 (and the Atari home computers) and hacked it in to Pac-Man Plus with a great deal of success.

Atari 7800
PacManPlus has also hacked the original Atari 7800 Ms. Pac-Man ROM in to, not only Pac-Man, but a number of Pac-Man related projects like Pac-Man Plus, Hanglyman, Ms. Pac-Attack (a hack of the original Ms. Pac-Man arcade that altered the maze layouts), a multiple maze version called Ultra Pac-Man. He has collected all of these hacks into one cartridge entitled Pac-Man Collection. PacManPlus did more than just alter the maze and colors, he's updated the graphics and taken many beta tester's suggestions in to consideration to make the most accurate conversion possible.

Colecovision
Opcode Games, developer of new titles for the Colecovision system, has developed a homebrew cartridge that includes versions of Pac-Man and Ms. Pac-Man, with the aim of making them as faithful to the original arcade versions as they can possibly be. As a bonus, Pac-Man Plus is available as a hidden game. Despite limitation on the display resolution permitted by a television set, the conversions are considered to be quite accurate and well made.