Mmm I depends. I'm the last of the GenX (1980) My siblings are 1977 (GenX) and 1982 (Millennial) respectively and we all played Nintendo pretty hard. It came out in the US in 85, which would be peek teen years for many GenX, in 85 only 4 years of Millennials had been born and would've been toddlers at best playing NES. SNES was 1990 when many Millennials would be playing it.