Old Mario Bros is a retro styled fun Mario bros clone-ish game where your job is to travel through 12 levels in 3 worlds to face off against the greatest evil the Mushroom Kingdom has ever known. Wield the might of the Super Hammer and fasten the buckles of your overalls to vanquish the evil Koopa King. The game is saved every time a world is complete. Use your keyboard WASD KEYS to move, press "J" KEY to fire fireballs and "H" KEY to use hammer. Press the SPACEBAR to jump. Read the in-game instruction book for even more info.