Happy Glass UWP - drawing and pouring!
(All About Windows Phone)

The idea`s not brand new, but the implementation is fun - this is a newish UWP game (via MyAppFree) for your Windows phone or tablet/hybrid that lets you draw, freehand, on a 2D puzzle to direct the path of water towards a waiting glass. It works surprisingly well and is a nice diversion to while away transit delays and the like....