A planned feature is of course to have more language data and also hints in every language. You can help for this in your own language if it is not done yet. Please contact me if you want to help with this, it's just a matter of translating the English words to your language (see How to add words in a new language for the game).
What can also be done is to use other kvtml files like the ones that are on the KDE-Edu website to play KHangMan. For example, imagine you can play the capitals of the world, the hint will tell you the country and you have to guess the capital. Or learn words in another language, the hint is the word in your language, the word to guess is the translation in the new language.
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