https://thenextweb.com/gaming/2019/01/11/unity-epic-improbable-public-spat-25-million-fund/

It’s not often in the video game industry that we get to see a public face-off between two companies, but we got one this week between Unity and Epic, creators of two of the most popular game engines among developers.

The conflict began between Unity and Improbable, the developers of a cloud platform called SpatialOS. Improbable announced in a blog post yesterday that, due to a change in the engine’s terms of service, it was in breach of license with Unity and the two would no longer be compatible.