[How to Play] - Lightly touch a tube to move the ball to another tube. - You can only move balls when the topmost ball is the same color. - You can move the ball only if there is enough space in the tube. - You can move any colored ball into an empty tube. - The level is completed when all tubes are filled with balls of the same color. - You can find '?' by moving the top ball. - You can restart the stage at any time if you get stuck. [Features] - Control is possible with one finger. - No time limit, play anytime, anywhere. - Easy for anyone to enjoy. - Freely change balls, caps, and backgrounds. - Use items for easier success! - Compete with other users and increase your ranking for additional rewards. - Supports red-green colorblind mode.