Why the DOS version? It had atrocious graphics compared to the original Mac version....
EDIT: I googled for screenshots and I never knew how many different versions of the game there were! Every platform had completely different artwork! Pretty amazing.
I actually prefer the PC VGA version; it has very nice graphics, but still in the same style as the original Apple II version, not a complete redraw in a different style and tone, like many of the ports.
And the DOS port came out years before the Mac port. No wonder it looks worse. I always thought the DOS version was the first port but apparently the PC-98 version beat it by a few months.
I think that title goes to Pac-Man[1]. It helps being older, not to mention one of the most recognizable games ever made. As well as the 80's being a time when many unique platforms rose and fell.
And honorable mention goes to Lode Runner[2] which doesn't have quite the fame as Pac-Man but has still managed to create a lasting legacy (pun intended).
What about Tetris? Though the line gets blurry about "official" ports of Tetris, I'd wager that the core game concept is one of the most ported of all time.
Note that Pong and Space War were both ported before Pac-Man, as well, though Space War didn't get a home version before Pac-Man to my knowledge, it did get ported from mainframe hardware to an arcade cabinet before Pac-Man existed.
EDIT: I googled for screenshots and I never knew how many different versions of the game there were! Every platform had completely different artwork! Pretty amazing.
https://www.oldgames.sk/en/game/prince-of-persia/pictures/