With CRYENGINE, we have a simple goal: to create the most powerful game engine in the industry, and to give creators all across the globe the tools to harness this power to create world-class gaming experiences, no matter their budget or team size. 5% royalties, full source code. Suitable for developing on all platforms, including a strong affinity & performance boost for VR. Check our the full-feature catalogue, here: https://www.cryengine.com/features