Are you a logic fiend? Crazy Matrix is a freeware puzzle game for anyone who enjoys frying their brain for fun.
You can set the difficulty by the number of squares on the Crazy Matrix screen, from four to twenty five. The aim then is to click on the squares in the correct order so they all light up. Each square will trigger different lights on the matrix so you have to work out by trial and error what does what and how you can piece together an order that works.
With four squares this is relatively easy, but even with twice that it's surprisingly challenging. With a full matrix of 25 squares, you'll need some serious mental power!
It's a good idea to start off at the bottom, as in this version there are no hints or solutions if you get stuck. Presentation is pretty basic, and sound effects are minimal, but not at all irritating. You can turn the SFX off, change the background but there are only very basic instructions included, although the concept of the game is much more simple than solving the puzzles themselves!
Crazy Matrix gets so challenging it might actually drive you crazy with frustration. One for hardcore puzzle fans only!