Portuguese? That's interesting. Alright, I have this game House of Cards in which you can play several card solitaire games.
It uses simple file to get all the strings in the chosen language.
The English strings can be found in this file: https://github.com/PhantasarProductions/House-Of-Cards/blob/main/SRC/Assets/Tric...
Just to compare here's the Dutch translation: https://github.com/PhantasarProductions/House-Of-Cards/blob/main/SRC/Assets/Tric...
Now I do not know if Portuguese uses accent marks and such, but in order to add those you can use |ue to get ë or |'e to get é and |`e to get è. Should work with any vowel, and if you need more, it won't be too much trouble to adjust my font file (I created the main font the game uses myself). Now this is a non-budget (and also non-profit) project, so it will be a volunteers job, but then again, the amount of text to translate isn't that much, either.