The Embedded Systems 3D Game Software Development Kit, short ES 3D Game SDK, is an Open Source 3D Game Engine / SDK for embedded devices / mobile phones. The new v0.4.1 includes hardware and simulated lighting for the terrain renderer. Also, several improvements and bug fixes are included in this release. The SDK is tested against the OpenGL ES library from Hybrid Graphics (Rasteroid 3.1), Imagination Technologies (PowerVR) and Nokia (OpenGL ES 1.1 Plugin). For OpenKODE, the Acrodea SDK is used and tested.