Blackrain Engine

blackrain3d.zip (47 kB)
A real-time rendering, game/cinematic engine.

Temporal-Wars XNA Indie Game Engine

https://github.com/TemporalWars/TWEngine
twengine.zip (821,0 MB)
Temporal Wars 3D Engine includes a full suite of WYSIWG tools designed for rapid creation of your game world. Created for myself (Ben), now available for FREE.

XNA 3D Level Editor

xna3Dleveleditor.zip (12,9 MB)
A generic 3d level editor built using XNA to speed up designing and building game levels.