A simple game for Win32 based machines based on a cellular automata algorithm which mimics the properties of a liquid. It is not a game with an object or goal like most eg; like scoring points or killing something, but it is rather more like a toy which exists merely to be fiddled with. A good example of something similar is a game used by many charities where coins inserted at the top fall through the game, hitting off things as they go. Where Flow improves onthis is that the obstacles can be changed in real-time, with the liquid responding accordingly. Real-life scenarios such as waterfalls, fountains and showers can be represented - or indeed anything your imagination allows. Devices such as capillary action (where liquid in a vertical narrow space tends to rise) and water pumps (up, left and right) move theliquid around the game area in a more controlled fashion.