First, as plyers aged, they continued to play. For example, in 1980, a 12 year-old child may have owned an Atari system, but a 30 -year-old most likely did not have one. Six years later, the 12- year-old ( now 18 ) would be likely to have (or want) an NES system, as Would his younger sibings. Six years after that, the now- 24 - year old might have bought SNES, and in 1998,the 30 year-old might have bought a Plat station.