Looks awesome! Is it possible for us to modify the files to change a language to another? I'm trying to learn portuguese!
You're probably able to if you decompile the game entirely and change view what files are related to the language(s) you want to modify. The files you'd have to modify are all in the category of 2D Art. You can probably either find them off Duolingo and change the size through GIMP to fit into the game properly. It would take some hard work to do so, but if you're up for the challenge - there's nothing stopping you!