Pokemon Silver and gold are a must buy for me and other Pokemon Trainers. New Pokemon are going to be introduced into the game and there will be a night and day, some Pokemon will be nocturnal and some will only come out in the day. Another feature is the breeding option, there will be a male and female of each Pokemon(like Nidoran) and you will be able to breed them. If you want a Gameboy Pokemon game, skip Blue and Red and wait for these to come out.