Growing up with video games in the 70's and 80's, I was well aware of pixels. When video games first started out, the screen resolution was so low that all your game characters and items were made of big blocky squares called pixels. With some imagination we could see a jumping plumber or a flying spaceship in those 8x8 or 16x16 grids of colored dots.
Today video games are so hyper-realistic that you can't tell if you are watching a real-life video or a computer simulation. However, everything old is new again, so there has been a resurgence of love for retro-games and their nostalgic pixelated style.
Note: The above comes directly from the Lesson posted at Control Alt Achieve. To read more of this lesson click here.