Knuckles Soccer is a single-player sports game played on a handheld electronic LCD device. The game involves controlling Knuckles to intercept balls kicked by Eggman, aiming to protect the goal behind him. Set in a universe featuring characters from the Sonic the Hedgehog series, the game challenges players to keep up with erratically moving balls, increasing difficulty as levels progress. It stands out with its simple yet engaging LCD gameplay, limited controls, and nostalgic design, offering a unique experience for fans of classic handheld electronic games.