Mondrian Squares

Nice little game that you can quickly pick up and play. You really need to study each level before you start clicking, so it won't be for everyone (more chess than Candy Crush). Graphics are basic but effective.

Cannot restart any level, or undo your last move. Having to restart the game from level one each time is annoying. There's no window mode. Only Full Screen with one resolution. The long tutorial plays each time you launch the game. Poor design.

This is a fun puzzle game where each level is procedurally generated so you will never play the same game twice. The rules can be learned in seconds and yet in spite of its simplicity you always need to think several moves ahead. The difficulty ramps up from frighteningly easy to frustratingly difficult in about 5 minutes, which makes for quite a fun journey. If you want a puzzle game that makes you stop and think rather than just blindly clicking, get this game on your radar.

At last, a puzzle game that really makes you think.

When it says "random, procedurally generated levels so you never play the same game twice" what it means is that the game doesn't save your progress. You start from the first level every single time. Which is fine if that's your cup of tea, but some of us play in small chunks of time and the description doesn't make it at all clear that such an approach doesn't work with this game.