Well, not the most ported, the Z-Machine with tons of games (even ones legally available from IF archive with great programming, such as Curses!, Jigsaw, Anchor

Well, not the most ported, the Z-Machine with tons of games (even ones legally available from IF archive with great programming, such as Curses!, Jigsaw, Anchorhead) might be. It runs even on the Game Boy, up to v3 games. Z5 and Z8 games will run fine from a 68020 and beyond.