Infamous Atari 2600 adaption of "E.T. the Extra-Terrestrial" in which the eponymous character has to navigate through various screens to collect three pieces of an interplanetary telephone that will allow him to contact his home planet.
Help E.T. find the pieces of his phone. Avoid the G-Man as he will steal your parts & hide them. Avoid the scientist as he will carry you off to his lab (but otherwise is not harmful). Once youy have all phone pieces, return to where you started the game & 'phone home' to end the game. If the G-Man or scientist are on the screen when you 'phone home', your ship will not appear.—LepricahnsGold