Created under the name Chain Shot! in 1985 by Kuniaki Moribe (Morisuke) The goal of the game is to remove as many blocks from the playing field as possible.
SameGame is played on a rectangular field, initially filled with 4 kinds of blocks placed at random.
By selecting a group of adjoining blocks of the same color, a player remove them from the screen.
Blocks that are no longer supported will fall down, and a column without any blocks will be trimmed away by other columns always sliding to left side.

Google