Does it work with any distro? Is it bug free with any distro?
I too would like to know as well. I have the game but can't get it to run. Ubuntu
There shouldn't be anything distro-specific about the wrappers, but you do need to have a fairly up-to-date system - make sure to have recent graphics drivers (Mesa 18.3 and newer for the open drivers, 415.x and newer for Nvidia) and kernel if using the open drivers. I recommend using the Padoka stable PPA for obtaining newer versions of the open drivers & the proprietary drivers PPA for Nvidia drivers; I've posted links to them here: https://www.gog.com/forum/general/adamhms_linux_wine_wrappers_news_faq_discussion
You'll also need Wine's dependencies, as well as some others as listed in the readme. If you're using Ubuntu 18.04 or Mint 19.x you can quickly and easily install all required dependencies using my common dependencies meta-package
Also, the build scripts are intended to be run from a terminal so you can view the output if there are any errors. The easiest way to use them is to just put all the files in one place (in this case, witcher3_wine.sh, witcher3_res.tar.xz, plus the game's installer files) then open a terminal in that directory and run the <game>_wine.sh build script, like so: ./witcher3_wine.sh
This will build the wrapper in the same directory (you can move it elsewhere afterwards if you want). From there, just run the start.sh script in the wrapper directory to play.
If the installer files are in a different location or you want to build the wrapper in a different location then there are options for setting that as detailed in the OP and readme.