I've owned these vintage games for a long time and they all still work

Well,The first Electronic game was Mattel Electronic Racing in 1977 and later there would be the football game.This would lead to the Mattel Electronic series which ran until the early 1980's.There was also a very rare game called Mattel Electronic missile attack and battle-star galactica

I used to own the Mattel Electronic Basketball and the first Football one. Later I bought Mattel Electronic Hocky