This is a clone (more or less) of SameGame, a tile-matching puzzle video game, originally released under the name Chain Shot! in 1985 by Kuniaki Moribe (Morisuke).
You can select just one block, or a group of blocks of the same type
If you are in the normal mode, you can place all the blocks against a side (top, bottom, left or right).
Select the side using the ``E``, ``S``, ``D`` or ``X`` key.
If you are in the automatic mode, the blocks rows will be placed on the bottom side of the board, and the columns will be placed on the middle of the board.
The special block **X**, multiplies that result by 10.