Excerpt from my YT review:
"The games programmer, Howard Scott Warshaw, was impressively able to design, program, get sign off from Steven Spielberg on the completed project, all in a time span of just five weeks. It contained the first sanctioned video game Easter egg, meaning permission was granted before inserting it into the game. This game also contains one of the earliest examples of in game product placements, Reese's pieces. ET is a single player game.
I am pretty sure I received this game for Christmas that year. At the time it really didn’t matter to me how good or bad the game was, I had the ET game and I was a happy camper. Atari produced over five million copies of this game"