Brainstorm from Silverbird is the most recent game of our pick, and is the only one of the nine which doesn't feature block/tile movement of some kind. Indeed, the game's concept is virtually original, involving steering up to three lines of set length around a mosaic of coloured squares in an attempt to entrap one or two balls. The balls accumulate points when over certain colours and lose points over others, so you must try to surround them whilst the score is increasing so that a screen total is exceeded.

Again, simplicity, freneticism and the demand for careful brainwork make Brainstorm a very challenging and stimulating puzzle game indeed. The three difficulty levels and five starting positions make play highly variable; if it's frequently panic-inducing, it's also highly captivating.