You could have acquired a copy of the game from a friend you want to play with. That doesn't mean much, it's the same deal with Minecraft. Quoting: torhamThe fact that you have a copy of the game verifies that you bought the game. I guess you could say it's a form of DRM, but typically what people refer to as DRM is third-party software built-in to the game which this doesn't have. Anyway, this is all somewhat off-topic since Vintage Story has a custom DRM.

This is possible, but undocumented and outside of what most people could do. The only alternative would be to install it once, and then attempt to package it up yourself for later installs.

Each time you want to install the game you must ask Steam for permission. The Steam client is definitely a lighter DRM solution than some others, though I still consider it DRM since you must always use it to install your game, installing the game is not possible without the client and Steam's servers. I'm not clear that you can really call that DRM-it doesn't enforce anything.

If I have no internet connection and start a Steam game, it tries to contact Steam, then whines that it couldn't and grumpily asks if I want to play in offline mode. So like, you have to have the Steam client on your computer (although there's probably a workaround for that), but it does not have to successfully phone home. but for all the games I play, the reaching out doesn't have to be successful.

Download vintage story