Is the "Nintendo Generation" Now in Their Thirties? It Depends on the Cutoff

Depends on the cutoff:

• NES launch (1985): Kids 6–12 then → born 1973–1979 → 44–50 today.
• SNES launch (1991): Kids 6–12 → born 1979–1985 → 38–44 today.
• N64 launch (1996): Kids 6–12 → born 1984–1990 → 33–39 today.
• Game Boy / Pokémon (1996–98): Similar cohort.

Most people who say "Nintendo Generation" mean late 20s to early 40s — the cohort that grew up with Nintendo as the dominant household name.