The game play is very simple. The user drops tiles into a 7x7 grid to create groups of consecutive tiles in a row or column. Tiles are removed and scored when the number on the tile matches the size of the group.
As you play additional tiles are introduced. For example, tiles with either vertical or horizontal bars on them can only be removed by a matching sized group in that direction.
Soon the game introduces quad tiles (they have four grey blocks on them). Quad tiles are the first example of a special group tile. These tiles are actually hidden number tiles. To unlock them and reveal the numbers they hide you must arrange 4 quad tiles in a square next to each other.
Finally, four variety of tri-tiles are introduced (they have three grey blocks arranged in various configurations). Trio tile are also hidden number tiles. To unlock them and reveal the number tiles they hide you must arrange three of them in an orientation that matches the orientation shown on the tile.
There are several ways to score bonus points.
Two Group Bonus – A tile that fades when it is a matching member of two groups scores double. This works for both regular numbered tiles and special tiles like quad and tri tiles.
Multi Group Bonus – It is possible to fade a quad tile that completes several quad groups, it scores once for each group.
Chain Bonus – When a tile fades, groups around it change in size. This often results in additional fading of tiles. Each time this happens a chain multiplier increases. When the chain completes, a bonus is awarded so that the total score of the chain is the sum of all the tile scores times the multiplier.
Board Cleared Bonus – If you can clear the board completely you earn an immediate board cleared bonus that will advance you to the next level. The value of this bonus depends on the current level.
