SpAc3man said:
Yellow is by far the best in the series. Play that one.
Ha, only with nostalgia goggles on, they were great for their time but Gen I really hasn't aged well. Graphically, it's badly drawn monochrome sprites on a white background. The Kanto region is the smallest and most basic, with around half the number of towns of recent installments. The only postgame was catching Mewtwo. The Gen I metagame was also horribly broken in favour of psychic types, with their only counter being
bug types which had no moves in that gen above 25 power, and many bugs were also secondarily a poison type which counteracted their meagre advantage over psychic types.
If you have to play a Kanto game, choose FireRed or LeafGreen, which are superior in every way. But seriously, just play X & Y since they have been improved so much and still feature the original 151 pokemon heavily.