THE GOOD:Super highly addicting RPG gameplay.
Keeps you busy for ages.
Graphics, for the most part, look pretty good.
Catchy soundtrack.
THE BAD:
Can get boring after long periods of time.
Some of the Pokemon look very, very weird.
Some Pokemons' cries sound very, very annoying.
Feels outdated by today's standards.
SUMMARY:
Lastability: 8/10.
GOTTA CATCH EM ALL, GOTTA CATCH EM ALL! GOTTA CATCH EM ALL, GOTTA CATCH EM ALL! However this gets tiring and boring after some time.
Graphics: 9/10.
Black and lime FTW! The overall graphics look mighty impressive, but the Pokemon sprites themselves look pretty odd...GOLBAT, YOU FREAK THE SHIT OUT OF ME!
Sound: 8/10.
It's catchy and it's not annoying (or isn't too annoying by today's standards). What more could you ask for? Some of the Pokemon battle cries are quite annoying though, and at 8-bit quality, it really shows. It's more improved at 16-bit (and eventually 32-bit, aka the DS) quality, but man is 8-bit quality annoying for annoying sounds...
Gameplay: 9/10.
You walk around trying to catch all the Pokemons! You also get to battle trainers and their Pokemon! You have to find the gyms to get the 8 badges to get to the Pokemon League to face the Elite 4 and eventually become... THE POKEMON LEAGUE CHAMPION! It gets a bit boring after long times of playing it, but so do most games.
Overall: 4.5/5.0
You really wonder how Pokemon could be such a smash hit back then, if this game (and Blue and Yellow) didn't exist or just sucked...