Yes, this version also contains 20 levels like the original, but they are significantly longer and more complex. I personally completed the game in an hour and five minutes, but I was emulating an NTSC model, which is faster. I think a less experienced and fast player on a PAL model could complete it in an hour and a half or more. Levels are unlocked for "practice" by completing blocks of four levels, but only by playing an actual game.