A good workout I love solving a few expert levels each day. Reminds me of my favourite puzzle, Subway Shuffle (too bad it hasn't been made for Android...)
Relaxing while thinking carefully Pretty good relaxing game. This while thinking carefully, when mistakes are made, easy to see how you made the mistake, which will only help in future levels when they are harder. Like In life, we learn from our mistakes, somewhat on how they are applied in this game, enjoy.
Enjoyable, with the ability to select just as much challenge as you want The premise is simple: fill in the nodes of a graph without any two adjacent nodes being the same color. Easy to learn, good interface, and I haven't had any problems from the app itself. One can select levels from Beginner to Expert, with plenty of puzzles on each level. One doesn't need to unlock levels in order to progress; if a particular puzzle seems intractable, simply choose another one. All in all, pretty much everything I expect of a pleasant diversion for passing the time.
Irritating Starts off easy and gets more challenging as it goes. Would be a great game if it didn't freeze and force close the app making you restart the level after almost compleating it. That's quite irritating.
deceptively challenging There's a trick to solving the puzzles quickly, but even then the game can throw you for a loop sometimes. Simple, clean graphics and that's really all it needs.
You might learn something! You sneaky, cheeky bast**ds! I just realized that all of your games very cleverly teach deductive reasoning. Fun & easy to learn. The deductive methods are introduced slowly and painlessly. Your games could be used to teach logic at almost any level. Well done!