Alex Kidd in Miracle World is a platform video game released in 1986 for the Sega Master System. Players control Alex Kidd, a young hero on a quest to rescue his kidnapped brother, Evan, from the evil Janken the Great. The game features various levels filled with enemies, obstacles, and puzzles. Throughout the game, players can collect items, such as coins and power-ups, to enhance their abilities. The gameplay includes unique rock-paper-scissors battles against bosses, which adds a strategic element. Alex Kidd in Miracle World is known for its colorful graphics and engaging gameplay, making it a classic in the gaming community.