All,
I am in the process of publishing a game on steam, but nothing is stopping anyone from finding the executable and media directory and copying it to another computer without steam.
I know some of you have published games (that aren't free), how do you prevent your game from being copied and distributed for free??

I saw that there is a STEAM API package, which allows for the inclusion in TIER1, but my game is both windows and macOS...

Help is much appreciated.
James