A collection of paper and pencil based puzzle challenges adapted to touch.
The object of the game is to connect all matching colors, while covering the entire board and making sure pipes do not overlap.
Difficulties range from easy to hard, each with 30 puzzles for 5x5 to 9x9 matrices. The number of "flows" to connect range from 2-7. The gameplay options are time trial, free play and a campaign-like mode.
Example of a level ready to be completed: