Bubble Sort-Category Sorting

Bubble Sort is a relaxing and brain-training picture sorting puzzle game with satisfying bubble merge mechanics!
Every glossy bubble on the screen holds a unique vivid image, including fruits, plants, animals, daily items and more. Your core task is simple and intuitive: drag and match bubbles with the same category to group them together.
Sort out all scattered pictures correctly to form a complete category set. Once a category is fully matched and sorted, the whole bubble group will pop and disappear with a smooth animation. Clear all bubble sets on the board to pass the level!
Challenge your logical thinking and observation skills with countless well-designed levels. Train your brain, enjoy the relaxing sorting process, and experience the great sense of accomplishment after every perfect clearance!
Game Features:
* Simple drag-to-sort gameplay, easy for all ages to pick up
* Rich picture categories, bringing diverse sorting challenges
* Smooth bubble pop animations and relaxing game rhythm
* Progressive level difficulty, endless brain-teasing fun