The product is an authentic Nintendo Tetris Game Boy cartridge that has been tested and confirmed to be in working condition. It is from the NTSC-U/C region (US/Canada) and is part of the Tetris Series by Nintendo. Made in Japan, this puzzle game cartridge is a classic favorite for Game Boy enthusiasts, offering hours of entertainment and challenging gameplay. Perfect for collectors or gamers looking to expand their Game Boy collection with a reliable and genuine product.