The QuickStart Engine is an engine designed to allow a programmer to get a 3D game started in XNA Game Studio as quick as possible. The engine is still in early development phase, and wouldn't technically meet the definition of Engine at this point. You will need to download XNA in order to use this engine.

The QuickStart Engine is designed with modularity in mind. It is setup on a component system, in which nearly all components are independant. For instance, if you want terrain, you simply add the terrain component and initialize it. Or if you wanted water, you would add the water component and initialize. If you wanted water with your terrain (such as lakes, oceans) you add both components, and then associate them. This allows the user to add only the components they will need in their game, to get them started right away.