"This is hard. The concept doesn't seem that difficult, but the way that Razorworks has designed the rules of play makes it much harder than at first appears and not for the faint of heart!
Pipe Mania is a game from way back when in computer gaming. I never played it, but have seen similar renditions incorporated in children's software. It is a staple critical thinking feature in many kids' games. Usually without a timer, though.
The basic premise is simple: lay out pipes of different shapes to direct the flow of "flooze" from a beginning pipe to an ending pipe. These starting and ending pipes are set in pre-designated tiles. It's the player's job to build the pipe from one end to the other before the flooze finishes flowing."