This is a Game Boy and Pokémon game cartridge that I purchased new back then, not used. I believe it was over 20 years ago. I played it for about 30 minutes and didn't notice anything of concern, but I don't remember how it was back then, so I can't say if the movement is slow or other minor details. There's some battery leakage in one area (please check the photos, although they're a bit difficult to see). I don't think I'll have time to play it for a few more years, so I'm putting it up for sale, hoping someone will take good care of it. Vibrant yellow GAME BOY COLOR, with Pokémon game. - Model: GAME BOY COLOR - Color: Yellow - Included items: Game cartridge (Pokémon) Thank you for looking.