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
Just to complete the trilogy of systems, PacManPlus took the Ms. Pac-Man ROM for the 7800 and first successfully converted it into Pac-Man, and then took it one step further and made Pac-Man Plus.