The flow graph system allows designers and other nontechnical developers to set up complex game logic without touching any Lua or C++ code. You can use the flow graph system in many ways for your game production. You can use the flow graph to varying extents depending on the type of game you are working on. You can create a majority of your gameplay using the flow graph or maybe control only some simple gameplay elements of a level now and then. The flow graph can help you reduce your script writing. A huge library of flow graph nodes will save you a lot of scripting work. Depending on your role in production, you may have already used the flow graph to create game logic, build a user interface flow, or even to create AI actions and behaviors. In the next pages, we will go beyond this basic usage with the goal to fully utilize all the elements of the flow graph system.