I installed Mint a week ago and it has played all of the 13 games I tried without any effort from me, except one which ProtonDB told me to change the compatibility mode in the steam properties then it worked great.

I would say see the ProtonDB entries for some games you like to set your expectations.

I think downloading movies you already own is legal, though I could be misremembering.

One time in a group I wanted out of because of a problem player, he tried to steal a critical piece of gear from my character while I was sleeping. Before I could say anything he started with a “What, it’s what my character would do!” I told him “Well MY character would kill anyone caught stealing from him with his very large axe, so good luck!” Weirdly he didn’t think that was as funny.

“I’ll shoot you, then you shoot me.”

Took me three times to catch that.