Collect King is a casual game, the rules are very simple. Just tap on the same color of the ball to connect them. When you pass a level, you will get new balls, so you will not have to wait for the next level.

If you do not know how to play, just take your time and think it through. Each level is going to be easier than the previous one. Each level will also be harder than the previous one, so you will have to work really hard to get high scores. Collect King is a game that could be played for free, and it has a lot of challenges, so you will not have to spend money on it.