blue is one of those games that'll definitely challenge you to rack your brain in order to solve unique puzzles. As the name suggests, the color blue is the common denominator. Don't forget that you'll have to interact with each piece of the puzzle in order to find the answer.
Gameplay in blue is simple, but you have to pay close attention in each puzzle if you want to make it to the next one. Some of the puzzles will only require you to tap on the pieces but some others will require you to move the pieces around until you find the solution.
As you continue completing the levels, finding the solutions will become more of a challenge. You'll be hooked on moving the pieces and tapping on all the right places to find the solution of each puzzle.
blue tests your concentration skills and ability to interpret movements to go on to the next puzzle. Plus, the fact that all the levels share a blue hue only adds to character and uniqueness to the game.