It's a challenging, fun and addictive game with loads of levels. Play 5 different chapters with 15 levels in each one and see the difficulty increase as the number of bars and colors grow as you move on. It's absolutely free, easy to use and works offline too.
The goal of the game is to make all the bars contain a single color that fills the width size of the bar.
You can only pick the last color of a bar which is at the right-hand side of the bar. There can be empty bars too so use these carefully as they can be of big help!
You can only merge pieces of the same color. Once you merge them you can't split them up unless you undo your moves.