Gameboy Pokemon red:Charizard go

This game is fun but there are a few problems, like when you first get you play for hours. Then you turn it off and you hear something it sounds like your game you grab your gameboy, but it's off. The same thing happened to me the sound stays in your head and won't go away unless you stop playing for a few days. This game is much like blue and yellow. Except that a few Pokemon that blue and yellow don't have. If you wanted to buy this game for someone, you would have to think about it. Does this person like things easy, hard, or harder.If you want to get:
1.)the easiest one then get the blue
2.)a hard one you should get the red
3.)the harder one get yellow
If you want something even harder wait till Pokemon gold and silver.