Super Mario World 2: Yoshi's Island is renowned for its hidden secrets and easter eggs, which add an extra layer of depth and replayability to the game. Players who take the time to explore each level thoroughly will be rewarded with hidden collectibles, such as red coins, flowers, and stars. Collecting all these items in a level is necessary to achieve a perfect score and unlock additional content. The game features several hidden levels, accessible only by achieving 100% completion in each world. These secret stages are often more challenging than the standard levels, providing players with a new set of obstacles and puzzles to overcome. The thrill of discovering these hidden areas and the satisfaction of completing them contribute to the game's lasting appeal. Yoshi's Island also includes various easter eggs and nods to other Nintendo games, delighting fans with subtle references and surprises. These hidden gems add to the game's charm and encourage players to pay close attention to their surroundings. The inclusion of secrets and easter eggs in Yoshi's Island not only enhances the gameplay experience but also encourages players to engage with the game on a deeper level. This attention to detail and emphasis on exploration are key factors in the game's enduring popularity and status as a classic platformer.