Yeah, remembered that wrong, thanks for the correction! Corrected it in my comment.

winecfg can add drives too, I always put an U: to /home/username , that makes it easier to pick a better location to install the game files (in my case, to ~/Games). A lot of things can be tweaked with winetricks and winecfg hahaha.

I think WINEPREFIX is all those tools need. Lutris can use that too (if i remember correctly).