Fantastic Voyage is a game released for the Atari 2600. It is based on the movie of the same name.
You and your submarine are to be injected into the bloodstream of a critically ill patient. Your mission is to blast your way through several phases of artery obstacles and destroy a life threatening Blood Clot.
Once inside the patient's bloodstream, your sub will be carried along in a steady forward motion. Tilt the joystick forward to increase your speed or backward to slow down or back up slightly. Your sub is equipped with medical technology's finest laser ray. Press the joystick button to activate it. Hold the button down for continuous fire. You may pause the game at any time during the play by flipping the Color/B-W switch.