Recently Amazon announced that they would be open sourcing the 3D engine and related behind their Amazon Lumberyard game tooling effort. As Lumberyard is based on CryEngine 3.8 (~2015 vintage), th… ...

Named the Open 3D Engine (03DE) it will provide developers with a free alternative to the likes of Unity and Unreal, without fees or commercial obligations, and with full access to the source code.