<a href="https://en.wikipedia.org/wiki/Open_3D_Engine" rel="nofollow noreferrer">https://en.wikipedia.org/wiki/Open_3D_Engine</a><p>> Open 3D Engine is a free and open-source 3D game engine developed by Open 3D Foundation, a subsidiary of the Linux Foundation, and distributed under the Apache 2.0 open source license.<p>> The initial version of the engine is an updated version of Amazon Lumberyard, contributed by Amazon Games.