Still the third gen, gerroff my case.
Remakes of red and green! (In Japan it was green, not blue) GBA style! W00t! And you can trade with RSE, so a full dex for you. W00t.
Edit 2020: Do you know how hard it is to ACTUALLY complete the pokedex in gen 3. I've done it, it's obscenely difficult. You need literally 7 games to do it. And in ruby/sapphire/firered/leafgreen you can't hatch eggs twice as fast. It's hell. Don't try it.
*More stuff coming soon*