Pokemon all the way too! A right throwback and one of the best games HANDS DOWN!! I wish I could get my hands on a 3DS and trying out in the 3D. Miss those days!All-time? Pokemon HANDS DOWN!!! Even in 2019 I find myself occasionally busting out the old GameBoy Color and doing a run through of the first few Pokemon Games...and Netflix still has the original series the last time I checked...No shame in saying I still go back to watch it.
More recently though I'd have to go with either Fable or Fallout, both are series which I've spent countless hours on.