No, there's no need to download anything at all. All games in our databases are browser-based mostly and don't require any download or set up. That said, some more mature games need Flash player, so you might have to setup it if you'd like to play some of these games https://colab.research.google.com/drive/1qbOcTDgq72aloJAYt0vDLqrRXU_H-o0H?hl=ca