This could be interesting for Modders or for Warhorse:
Amazon Lumberyard is free,cross-platform, 3D game engine for you to create the highest-quality games, connect your games to the vast compute and storage of the AWS Cloud, and engage fans on Twitch.
Including full source code, so you can deeply customize Lumberyard for your team and your vision for your project today, and for future projects in years to come.
The visuals technology of Lumberyard is based upon CryEngine, which has created award-winning graphical fidelity and benchmark-setting graphical performance. Your artists get powerful rendering technology and authoring tools to create near-photorealistic 3D environments and stunning real-time effects, including physically based shaders, dynamic global illumination, a particle effects editor, vegetation tools, real-time dynamic water caustics, volumetric fog, and filmic features such as color grading, motion blur, depth of field, HDR lens flares, and more.
Your artists can use Lumberyard to create believable characters and high-fidelity performances that immerse players. Lumberyard’s character tool, Geppetto, combines animation, attachments, and physics simulations with blendshape, blendspace, and animation layering. Combined with Lumberyard’s animation tool, Mannequin, animators can bring believable characters and creatures to life with dozens of features, including animation sequencing, transitions, ragdoll physics
and lot more <
