Why does everyone forget Tennis for Two?

It absolutely was!

"“Tennis for Two” was a science experiment, created by William Higinbotham for the annual visitor’s day at Brookhaven National Laboratory in Upton, N.Y."

…"Hundreds of people lined up to play “Tennis for Two” on Oct. 18, 1958."

…"To celebrate the game’s 50th anniversary, Brookhaven is giving players another shot at “Tennis for Two.” On Friday, the lab will open its doors to the public from 11 a.m. to 2 p.m., displaying “Tennis” alongside more modern game hardware, including the Nintendo Wii, the Sega Genesis and the Atari 2600."

source – http://www.nbcnews.com/id/27328345/