Does show some discoloration. Tested good

The product is an authentic US version cartridge of Ninja Gaiden Shadow for the Nintendo Game Boy. Released in 1989 by Nintendo, this action-adventure game is part of the Shadow Warriors series. With an E-Everyone rating, players can expect an exciting gaming experience as they navigate through various levels filled with action and adventure. This classic game, manufactured in Japan, comes with a 3-month manufacturer warranty, making it a reliable choice for retro gaming enthusiasts.