Ok, my first Pokemon game was Crystal, and I didn't
know much about it. I was pretty young when
I had it too. It's internal battery also still works!
Well, here's what happened to me:
I made it up to the Elite Four and wandered, "What was the third starter?"
Because I clicked Totodile, no, clicked Cyndaquil, yes! (I didn't know of
a guide or internet site at the time)
I start new game, check the third one, it's Chikorita. I
thought it was OK, so I (foolishly) saved the game.
"Now time to get back to my MAIN file, all games have more than one!"
"Huh, what?! Where'd it go?!"
So I restart with Cyndaquil and replay the whole storyline and
eventually beat PKMN Trainer Red(Ash?) when it could have taken a
whole week earlier.
Well it sure kept me busy, but it was kind of boring doing
the same thing over and over again.