See pictures to judge condition. Top of label has some wear, seems to be in good shape all around!

I was able to save a game, which tells me the battery is working as well.

Experience the adventure of a lifetime with Pokémon: Red Version for Nintendo Game Boy. Immerse yourself in a world full of possibilities and become the ultimate Pokémon trainer. This game is perfect for all ages and promises to keep you entertained for hours.

With an authentic and tested game cartridge, you can be sure that you will have a smooth gaming experience. This game is compatible with NTSC-U/C (US/Canada) region codes and was released in 1999. Published by Nintendo, this action and adventure game is rated E-Everyone and is perfect for anyone who loves the genre. Get ready to embark on an epic journey with Pokémon: Red Version.