If you specifically need version 1.36 (originally released in late 2019), it introduced several major technical and gameplay changes:

For those with a very old, non-Steam copy of the game (such as a disc version), official updates were historically available directly from the developer's website. However, this manual patching system is no longer the primary method, as most users are now on the Steam version.

Once you have downloaded the game, follow these installation instructions: