Super Mario Bros 3Mix is a Super Mario Bros 3 hack that includes many new features.There is all new levels with many new songs added from other Mario games. You can play as Mario, Luigi, or Toad in any configuration. New power-ups are added to the game, such as the Super Carrot, Penguin Suit, and the Boomerang Flower. You now have the ability to re-enter past worlds by using star world. You also have the ability to re-enter past levels (for many reasons). There is alternate exits in some levels. There is progress saving feature! You can battle many new enemies, typically some special ones for the world theme. There is all new bosses, mostly from previous games. And most of all, there is all kinds of game play changes to meet the theme of a level/world, such as upside down gravity! The graphics of the game are similar to Super Mario Bros 3, but have some tweaks here and there. Most objects are from previous games. The music is really fun to listen to, probably because they are 8 bit versions of some songs. This game is very addictive. What I like about it is that there is star coins that you have to collect. The story is huge. Which makes it fun! Yes the game takes a while to beat. You even have prankster comets to finish after you beat the game. The difficulty is very similar to Super Mario Bros 3. Have fun playing this game. It is great!