Modding
The great thing about these games is that there’s still a very active modding community with many awesome mods still being developed (especially for Gothic II). The challenge here is that many mods have specific requirements, rely on certain installation orders of dependencies or are not compatible with each other.
The surest way to get everything running smoothly is to keep different mods in separate installations (i.e. Wine prefixes) and follow specific installation orders/instructions to make sure you get reproducible builds, so to speak.
I know this is tedious, that’s why I created custom Lutris install scripts in each of the sections for installation instructions. Since such automated scripts are prone to breaking when new versions are released or the URLs used are not available anymore (or other reasons) I will also record the steps to install everything manually.