Xbox Game Pass Ultimate: What is it? Xbox Game Pass Ultimate is the combination of two services offered to gamers by Xbox: Game Pass and Xbox Live Gold. You'll get both services for one monthly fee rather than paying out for the two modes separately, which will save you money and hassle. Game Pass is the bit that gives you access to Microsoft's bulging library of games across the history of the console. A huge list of games will become free for you to download and play at any time, with no limits to what you download or how much you play, so long as you continue to subscribe.