Comment by Rohansi

> How is it that this came to my Apple-Silicon Mac before Valve could do it natively?

Why should Valve update their old games to work on Apple Silicon? They're old and only 2% of Steam users (clients?) are on macOS.

Also, this port works offline in your browser. If you've loaded it up before the assets are cached and you can play with no internet. Yes, even if you've closed the tab and open it again later without internet.