Rabbit 2600 has released his first Jump’n’Run game for the Atari 2600 named Jump! Jump!. It features 15 different screens that are randomly chosen. Use the joystick to move left and right and press the button to jump. Get points by completing a screen. Jump to avoid the fireballs!
http://atariage.com/forums/topic/217535-jump-jump-atari-2600/