There are multiple Plus! translations that aren't included in the setup, due to different reasons (mostly to make the executable file smaller). In this thread, you'll find a link to every alternative translations posted on these forums, for easy access. Just click on the translation you need
Please note that some translations may be outdated, you can contact the author and help updating it if you want.
if you want your translation to be on this list, simply send me a PM. Also, if you know i missed an already posted translation, please let me know