To earn a rainbow cube, you need to complete a challenge level or quest to win a rainbow cube in the Cookie Man Kingdom.
In the game, you can earn rainbow squares by participating in activities, collecting certain items, or completing levels.
In addition, you can earn rainbow squares by redeeming points or buying gems.
In the interaction between players, rainbow blocks can also be acquired through trading or gifting. In short, actively participating in various activities and challenges in the game is an effective way to get rainbow blocks.