Region Free Blu-ray collection question

If it's region-free it'll play on anything. What you will want to check though if it's from Europe or the UK is if anything on the discs is in 50hz format, because that won't play on a US setup.

I have the Doctor Who: the Movie on Blu-Ray from the UK, and I can't get it to play on any Blu-Ray enabled system except on my PS4, and the bonus disc won't play unless I put it in my International DVD Player. It's the same with Nightmare on Elm Street Blu-Ray collection.