I am planning to use UE4 to prototype my game designs for the company that I work in. The company however uses an in house proprietary engine (which is built from the ground up) though for game development.
The only way I will be using UE4 is to just build prototypes and show the idea to the management and the dev team and in no other way.
My question is,
Is the company required to pay royalties to Epic for using UE4 in this manner?
I want to clarify this before installing UE4.
Thanks in advance.