Been working on the following XNA game engine for the past 3 years…
TemporalWars Home Page
TemporalWars GameEngine Page
Contains the following features;
Graphics
* Per-pixel dynamic lighting
* Normal occlusion mapping
* Reflection handling
* Powerful explosions, fire, and smoke particle systems
* Glow post processing effect
* Bloom post processing effect
* Guassian Blur post processing effect
* Powerful Shadow-Engine
World Editing Tools
* Terrain “Height-Tool”
* Terrain “Paint-Tool”
* Terrain “Item-Tool”
* Terrain “Property Tool”
AI Behaviors
* Aligned
* Arrive
* Cohesion
* Flee
* Follow Path
* Obstacle Avoidance
* Offset Pursuit
* Seek
* Turn-To-Face
* Orientation
* Wander
Available RTS Components
* 3-Thread A* Pathfinding engine
* Minimap component
* Statusbar component
* Fog-Of-War component