First of all: Finally a game that really wants to have a no money. Have the game now played to level 35 and so far I was seized by no means in the bag. The game: It is a classic tube-connect game. You have to create piping and thereby block all possible existing pipe parts. Start and end points, and later single pipe parts are specified from the outset. In addition, you only have certain pieces of pipe which can obstruct. The challenge is to manage with the given pipe sections or use all. You can complete each level with up to 3 stars, one star for "managed, but there is something important or many parts unused" is, "Well done but not installed a few" 2 stars for 3 star and for "Super, everything used ". Beautiful game, the higher the level, the more complicated the arrangement. The thought-provoking and brainstorming.