To move from an older version (e.g., 1.63) to 2.00 or 2.01, you generally have two options:

If you are playing on a DRM-free version (such as the Elamigos release), you cannot simply click "Update" inside a launcher like Steam or GOG Galaxy. You must manually patch the game files.

Update 2.0 wasn't just a patch; it was a fundamental reconstruction of the game’s core mechanics. It introduced features that fans had requested since 2020: