The objective is to pair up and connect all the matching colors on the grid with single continuous pipe flows. The pipes cannot branch off or cross over each other. Each puzzle has a unique solution and all the cells in the grid should be filled. This is the classic numberlink puzzle game, with a plumber twist where you must link each color (or resource) to keep the pipe flow. FEATURES: - all the puzzles are free - 4 difficulties (easy, medium, hard, evil) - 8 different sizes (from 5x5 to 12x12) - 10 achievements from google play games - each pipe flow with an unique color - unique solutions for the numberlink puzzles - beautiful colors and design - smooth gameplay Each color (or dot) has a letter (or number) in order to help color blind people to link the pipes and thus match the colors. MORE FREE LEVELS WILL BE ADDED IN THE FUTURE!