Help me OCAU, you're my only hope. The premise is simple, let's find out which game had more ports: Doom or Tetris. Here are the rules: One point is awarded to each architecture/OS combo. So MS-DOS+x86 is one point, Windows+x86 is another. Multiple ports to an architecture/OS combo at this stage only count as one point (so PRBoom for Windows and WinDoom don't add extra points to Doom's tally). Doom: must be a source port. i.e.: using a portion of the actual Doom (or Doom II) engine, whether official or a source port. Tetris: given that it wasn't an open source game like Doom, we're going to count unofficial versions as well. But it must comply with the definition of traditional Tetris - i.e.: falling tetriminos (the five shapes that can be made out of 4 squares, not including rotation/reflection). Variants like "Bomblis" don't count (unless Tetris is bundled with them, of course), neither do "inspired" games like "Columns" or "Klax". I'll maintain a list in the second post in a way I can easily parse for automated counting (because I'm lazy). From thereon, please comment away with links to examples of given ports (whether it's real code or just evidence of someone else doing it, like a video or photo).