Comment by runjake

Now, the kickers behind the headlines (that nobody told me up front):

1. The majority of the games do not support multiplayer on Linux, due to dependency on Windows-specific anticheat software.

2. Many, many of the games themselves aren't totally stable on Linux. So, expect a crash or two at critical gameplay moments.

That said, Proton is a great effort and it's great they're pushing Linux forward.