Question: I've noticed that a Unity game uploaded as a playtest on steam can be manually copy pasted from their steam app folder to anywhere and still run. How do I prevent someone from being able to simply copy paste the game. Should I have an initial step that makes being logged into steam a requirement? Is there a better approach?

More Details: I understand fighting pirates in the end is a futile endeavor, and our game is probably not worthy of pirating anyways, and we aim to make our game accessible price wise and dont want to bloat it with frustrating DRM experiences that are a plague to the industry. But I think I'd like it to be at least slightly harder than copy pasting. For peace of mind and as a learning experience for myself as a programmer.

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[SOLVED by pschon]: https://partner.steamgames.com/doc/features/auth to implement basic SteamDRM to prevent running of copy pasted instance. Works for playtest/demos.