The challenge that it poses is to join two boxes from the grid with different blocks in them to form a perfect square, something that may seem very easy to start off, but that can become rather complicated as you advance along the game. What's more, the game poses another challenge, that is to join to objects that are related to form a perfect combination, like a pot full of gold with a rainbow or a chest with a key, to set a couple of examples.
As you advance along the 150 different levels of the game, you will have the chance to choose between all kinds of powers that will help you reach the end.
The game's interface is rather clear, with a set of graphics that aren't specially spectacular, but that manage their objective, to make the player pay attention to the game.
Therefore, if you want to have a good time while you exercise your mind, download and try Trinklit.