Is My Blue Your Blue? (ismy.blue)
People have different names for the colors they see. Language can affect how we memorize and name colors. This is a color naming test designed to measure your personal blue-green boundary.- Atari 2600: Pitfall (Internet Archive)
Pitfall! is a video game released by Activision for the Atari 2600 in 1982. It is the second best-selling game made for the Atari 2600 (after Pac-Man), with over 4 million copies sold.