This is a game to match color four or more blocks. Each block has a number corresponding to a color. If color matches vertical or horizontal four or more, matched blocks are removed and newly located block increases the number. The removed numbers become your score.
You can rotate located blocks by tapping.
There are two bonus patterns. If four blocks on one vertical or horizontal line match, all blocks on that line are removed. And if 2x2 blocks on each corner match, one more outer blocks are also removed.
You can throw away blocks by using a coin. You can get one coin per 50 removal in one play, and can use it next play. Also you can purchase coins by in-app billing.