Template:GenInfo

To prevent the template from displaying decimal lengths for a generation whose release date has not yet come, fill in the parameter {{{timeworkaround}}} with "en" or "ja", depending on if a release date has yet been revealed.

Generation I
Title screen of Pokémon Red Version
Debut EN Unknown JA Unknown Pokémon 151 (1,029 new) Main games Red and Green Region(s) introduced Kanto Current length EN 10147 days JA 11064 days