These are four Game Boy games from the Pokémon series. They were played in the past, so the data is as it was at that time. I cannot confirm their operation, so I will only sell them to those who understand this. No claims, no returns, please. - Game Title: Pokémon Red - Game Title: Pokémon Green - Game Title: Pokémon Pikachu - Game Title: Pokémon Silver Thank you for looking.