Mix’n’Match is highly applicable for second language subjects as well. You can set the feedback in the games to be in Danish, English, German and French.
That means that if you make a game for a class in French where one spot says “présent” and you have to find the spot that says “être” to practise your grammar, you can get the feedback in French as you play, reinforcing the sound of the language.
You can make grammar, translation, question and answer games about specific topics,, and so on. It’s easy to make games where students have to match German, French or Danish words with their English counterparts such as “head” and “kopf” as a pair, and for French e.g., “Je m’appelle…” and “My name is…”.