Simple, yet fun. No tutorial, so going into this blindly (as I did) is a little confusing at first. Luckily, the game's name/description tells you all you need to know to progress through the levels (you have four colours with which to fill out all the shapes on screen, and adjacent fields must always be differently coloured). Each colour has a value attributed to it, which determines the value of each field. The values of all coloured fields are added up and every level has an ideal sum to be met, which provides an additional challenge. All in all, not a bad puzzle game. Certainly not the worst thing I've bought on a whim. Tested on Linux, no issues found. Note that—as of writing this—there are no in-game settings and the game is windowed-only (not that it desperately needs a fullscreen mode).

For what this game is it is pretty enjoyable. There are 50 levels and beating them on their own is not too hard. The difficult part is trying to get the star in each level, which you get by getting the highest number of points. These points are earned by using the most valuable colors more often. Yellow is 10, Blue is 6, Red is 3, and Green is 1. It is a pretty fun game and can help pass the time easily.

This game was enjoyable! I really enjoy graph theory, so seeing a game made with some related concepts was cool. I made my own python code to help me out with the later levels.

Cheap, simple puzzle game. Hard to ask for more. Giving the different colors different point values and providing the maximum score for each puzzle is a masterstroke, as it provides an extra challenge while also giving a small hint as to where the remaining points should come from. I've completed half of the levels at the time of writing this review, which does highlight how small this game is, but for a dollar it's hard to complain about the amount of content.

It's the four-color theorem.

This game encompasses 50 puzzles all based on the Four Color Map Theorem from mathematics (planar maps to be more specific). It is a good challenge for those who enjoy real game applications of fun math concepts, but the poor user interfacing makes this a harder sell. You cannot save while in the middle of one of the levels (as far as I tried) and the menu to select a level is slow to scroll through. I do not have a problem with the simple visuals of the interface, but the control over it is lackluster and the game could use some quality of life improvements, but the core puzzle solving is worth the asking price, or wait for a sale.

The biggest problem with this game is the lag that occurs every time you start a puzzle. Every time a puzzle starts, for a second or so, my computer starts whirring loudly, as if it is doing a lot of work (I am on Linux, in case that makes any difference). This is unacceptable for such a simple game. I also dislike the mandatory cutscene that plays at the start of each puzzle. I just want to jump straight into the action. I personally also find the control scheme not entirely seamless. In order to choose a color, I have to scroll from my current color through the list of available options until I reach the desired color. The distance you have to scroll changes depending on what the start color is and what the end color is, and it's a little slow. I would prefer it if the colors were mapped to the keys 1, 2, 3, 4. Then, in order to choose a color, all I have to do is make 1 button press. As it is, I have to make multiple presses, and I have to look over at the color list in order to wo...

Interesting little puzzle game based on a mathematic theorem of the [url=https://en.wikipedia.org/wiki/Four_color_theorem] same name[/url]. The puzzle are a lot more difficult when you go for the star: that imply that you have to maximize the number of time you use the yellow colour (10 points), then the blue colour (6 points), then the red colour (3 points) and finally the green colour (1 point). The first few puzzles make the game look easy but it is a deception, it get harder later...

Fun game! There are options that you finish the puzzle or get the highest grade.

Fun game! It gets pretty difficult near the end. I got my entertainment value out of this one!