Drop Tile PVD app for iPhone and iPad

This game is a game that displays three tiles or more to diagonal length and breadth by operating the dropping tile and erases it.
The post of the tile is displayed in the left of the screen.
The dropping tile is operated in the game panel.
(1)It moves to the right: It rubs right.
(2)It moves to the left: It rubs left.
(3)It drops: It rubs below.
(4)Tiles are exchanged: It is a rubbed.
RULE
(1)The tile disappears when the post can be done.
(2)An upper tile falls when the tile disappears, and the chain happens.
(3)[Dragon Tile] slows down the falling speed.
(4)When the tile gets to the upper part of the screen, it becomes a game end.