Turn It is a straightforward Shisen-Sho. In this game, usually played with MahJongg tiles, you can remove matching tiles if they can be connected by a line with two or less right angles that does not go through other tiles. For veterans of MahJongg it can be quite confusing that the tiles do not have to be on the edge of the playing field. If, for example, two matching tiles are directly beside each other, you can take them out immediately even if they are right at the center.
Unfortunately, every level has a time limit. I consider games like MahJongg, Shisen-Sho or Soko-ban "mind games" and don't like to play them against the clock. Another disappointment is that the levels are predetermined, not random; every time you play the game, it is exactly the same.
As yet, Turn It has played well on every computer I tried. On a slow computer you can see the animations checking the validity of the turn, which is quite nice. Since there is music only on the title screen, a sound card is dispensable, as is a mouse.
