This session reveals the implementation details of some of the techniques developed by the PC demogroup Fairlight to render advanced visual effects that are usually only seen in offline rendering, but are possible in realtime and suitable for DirectX11 powered games. We reveal how huge dynamic procedural scenes, large and detailed fluid dynamics simulation and rendering and realtime raytraced illumination can be created on the GPU using DirectX11. The session focuses on ways to implement important building-block techniques such as efficient procedural mesh generation utilising DirectX11's feature set.