Use your computer, tablet or phone to download Rock Band 3 (U) and turn them into an arcade machine using the wide variety of Nintendo DS emulators available on RomsDL. The free Rock Band 3 (U) game comes from the US region. It only takes a small portion of your hard disk to download Rock Band 3 (U) ROM or you can always play Rock Band 3 (U) online. This game was already downloaded by 79 people and you can be the next on the list if you simply tap on the save button.