I'm new to Unreal

Hello everybody. I am new. I am considering installing and working with the software but before that I need to know something .

First, is Unreal Engine free to use professionally?
Is it for 2D, 3D or both?
Does it obtain any type of data from the computer when the user is playing with the game developed with the engine?

Thanks in advance.



It depends what you are doing. If you are making games, then it costs 5% of your revenue above $3,000 per quarter. If you are making a movie with it, I believe it is free.
Not as far as I know.

Ok. So, if I am making games but I am not reaching $3.000, is still free? Thanks in advance.