The Odyssey was the first game console released.
The Odyssey has no real specs. It contained no processor or memory. The box is made up of transistors, resistors and capacitors. Odyssey used cards that contained pin outs to change game settings. Plastic overlays that could be placed over the TV screen created graphics and color, but the actual display consisted of white squares (Paddle and ball) on an all black background. The Odyssey originally came with six game cards, and a 36-page user manual for the twelve games offered by the system. 
There were 18