Mari0 is a Super Mario Bros and Portal mashup currently under development. Previously, the same developer made Not Tetris; a faithful reimagining of the original game, but with the addition of realistic physics and geometry.
These days, any old fool can beat Super Mario Bros with a record-breaking number of points, or in the shortest amount of time. This guy managed beat the game with the lowest number of points possible. He ran the clock down to zero on each level, always landed at the bottom of the flagpole, collected no coins, killed just one goomba, and somehow managed not to die once during the entire process.