So I was playing video game and discovered I could set the language to German, so I decided to play it in German so that I could practice a little bit. Then I noticed that several times the infinitive was used instead of the imperative to give orders (for exemple "Aufmachen!" instead of "Machen Sie auf!"). Is it something common? I usually don't trust very much in video games translations. If it is normal, is it used in specific situations? (I had the impression it had to do with the du-Sie formality).