The first ever shown course for the next Mario Kart is an improved version of an old classic course from the series.

Super Mario Bros. turns 25 today -- a huge milestone for the game that many believe saved the videogame industry. See how the series evolved from an 8-bit smash to and cosmic adventure.

Super Mario Bros. features a timer system that speedrunners refer to as the "frame rule" - the game only checks for level completion every 21 frames.