This is a well put together game.

The games themselves are challenging and very interesting.

The options are good and it has a mixture of game and solving with different sizes.

I think this would be my game of choice for purchase except for ONE big important thing, I can't play it for very long, it annoys my eyes, the game box is not designed for looking at for long periods of time and the colours are terrible to my taste and there is no option to change that.

The menu logic is not the best and you have to go to different levels to change options ? WHY not make all choices from one menu bar ?

The version I've tried is 4.35 and I think it is definitely worth a try, if they ever change the colours or make it an option, I may buy it ...