No, it's not necessary to download anything. All games inside our database are browser-centered and don't require any download or set up. That said, some more mature games need Flash player, so You could have to put in it if you want to play Many of these games and don't https://www.ices.dk/ICESSurveys/Lists/2018_Tools_for_EBM/DispForm.aspx?ID=34986