So with each of the Pokemon games, you generally start with three choices of Pokemon – a Fire, Grass, or Water type. You chose that, and your rival usually chooses the most effective pokemon when compared to your choice, eg: Water against Fire.
I recall that there was a point in a version of Pokemon where you could go back and take the third Pokemon, whichever one got left over. Am I dreaming there, or can you go and get that third Pokemon in a game? If so, which version?
Best Answer
There is no game where you can claim the leftover Pokemon after choosing your starter.
In some games (such as Black and White), both unchosen Pokemon are given to NPCs. In others (like Red and Blue), the unused Pokemon sits neglected on a table all game long. There is no way for the player to get this Pokemon in any version.
In Pokemon Yellow, it is possible to get all three first-generation starters, although you don't start with any of them, so that still doesn't meet the criteria you set forth.
In some games, it is possible to get starters from past generations by completing certain requirements after beating the elite four. For example, in HeartGold and SoulSilver, you can get a 3rd-generation starter in the Silph Co. building, but you can never pick up the "missing" 2nd-generation starter that wasn't picked early on in the game.