Bonus levels are unlocked by collecting a certain number of Super Gems throughout the main story. These levels often present unique challenges not found in the regular episodes, such as timed runs, specific enemy encounters, or levels where you control multiple Toads simultaneously. Some bonus levels are remixed versions of previous stages with added difficulty or new objectives. To unlock all bonus levels, you'll need to diligently collect every Super Gem in the main walkthrough. These levels are excellent for honing your puzzle-solving skills and provide a satisfying challenge for experienced players. Don't underestimate their difficulty!
