Super Mario Bros 1 Remastered is a remake of the original Super Mario Bros with more features and levels!
Super mario bros Origins Chapter 1
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Super Mario Bros. Origins (SMBO) is a remake of the original Super Mario Bros. with more items, secrets, levels, and overall gameplay. When the full game is out it will have 64 levels, 32 remade SMB levels, 32 new/remade from other games levels.