It's really cool to be able to play this old game without any difficulty. But as other reviews have , there are a few differences that can be really frustrating if you remember the game well and didn't expect it. Not only are some musics missing, but they are not assigned to the right levels ! I clearly remember that the first level didn't begin with that music, but with a more dynamic and joyful one. They also don't seem to loop the same way as in the original game. Some sound effects, like when picking blue pearls, have changed too – the kind of detail which importance you only discover when it is gone : these pearls are useless and I used to pick them only for their sound. Since the major problem with Dosbox versions you can find on the net is the lack of music and/or sound effects, it feels like GOG tried to fix it, but didn't bother assigning the right musics to the right levels and reproducing a game exactly as the original, which is what I'm looking for.