He's not playable in MK2 without cheating devices.
And even that doesn't usually work right.

Cheating devices such as?

Game Genie, Game Shark, or Action Replay depending on the system

P.S. That win 50 matches secret is to fight Noob Saibot, not Smoke. To fight Smoke you must be in the red Portal stage and when Dan Forden pops out and says "Toasty!!" after an uppercut, you must hold the down button and press the start button. This will not work in Midway Arcade Treasures or Shaolin Monks MK2.