Hash Blocks (1991) (GTC Inc)

A very interesting variation on the theme of Tetris. Figures consisting of three symbols lined up in a row fall from the top. These figures can be rotated, as well as change the order of symbols inside. At the same time, if a row of four identical elements is formed at the bottom, it disappears. There are several "skins" (or rather, types of elements), which you can choose at the beginning of the game.
There are two modes. The first one is a banal collection of points. The second one is for passing; you need to achieve the disappearance of the symbol flashing in the lowest row - after that you move to the next level.