KONAMI's Game Boy Advance game "MONSTER GUARDIANS", operation confirmed. - Game Title: MONSTER GUARDIANS - Brand: KONAMI - Model Number: AGB-AMNJ-JPN - Operation Check: Operation confirmed - Save Data: Save data successfully read Thank you for viewing. I sell a lot of retro games. I enjoy playing and selling them myself. Please read my profile before purchasing. [Game cartridge only] It's a product from about 20 years ago, but it works fine. I have confirmed that the software starts up on my own game console. I cannot guarantee the remaining battery life. I provide as much information as possible not only in the description but also in the photos, so please check them. The cartridge terminals have been cleaned. There may be compatibility issues with the console. Don't give up, and insert it firmly each time. Even without terminal restoration fluid, you can try rubbing the terminals with a cotton swab with Magic Clean or similar, and wiping them with a dry cotton swab, which will make it easier to read. I welcome combining with other software ♥ In that case, please be sure to contact me before purchasing. I will discount 100-200 yen for each additional item included ♥ When shipping, I will wrap it in cellophane to protect it from rain, and reinforce it with bubble wrap or cardboard for sturdy packaging to prevent crushing.