The Xbox Series X's Smart Delivery feature is something that sounds so obvious that it should be included in every new gaming console. It is also one of the best features of the Xbox Series X that Sony's upcoming PS5 doesn't seem to have a complete answer for. And as Ubisoft has revealed it will support "Watch Dogs: Legion," we're learning about new smart delivery games by the month.

This is intended to solve the ever-frustrating problem of older generation games being left behind when upgrading to a new console. Instead, Smart Delivery allows users to purchase select Xbox One titles and automatically enjoy enhanced versions of those games for free when they upgrade to the Series X.

Xbox Series X Smart Delivery also allows users to enjoy enhanced versions of games on this upcoming console more like any previous console It also reinforces the idea that it will resemble the PC more than any previous console: PC gamers have purchased dozens, if not hundreds, of games, and those games have been passed down across machines for decades.

Here's everything we know about Xbox Series X Smart Delivery:

Xbox Series X Smart Delivery takes the idea of backward compatibility even further. In Microsoft's words, "If you purchase an Xbox One version of a compatible title and decide to "jump into the next generation with Xbox Series X," the Xbox Series X version of that game will be automatically delivered when it becomes available, at no additional charge.

Some of the games available through Xbox Series X Smart Delivery are optimized for next-generation consoles, so if you purchase the game on Xbox One or Xbox One X (or play it via Game Pass), you can expect the Xbox Series X's improved performance You can expect to upgrade to take advantage of the Regardless of which Xbox you play on, the game progression for the day will be the same. And you can expect the game to take full advantage of that system's performance.

Of course, the world of video games spans countless companies, so Xbox Smart Delivery is not so simple. Microsoft is working to support this gamer-first shopping experience, but it is up to developers to take advantage of it. According to Microsoft's announcement, Smart Delivery is a "technology available to all developers," which means that in order to add it to your favorite games, the makers of those games must agree to it.

Fortunately, the company has already committed to making all Xbox Game Studios titles compatible with Smart Delivery, and several major third parties have already begun to support it.

Below is Microsoft's official list of Optimized for Xbox Series X games that will support Smart Delivery. For these games, there is no need to wait for the Xbox Series X launch; you can play them right now on your Xbox One and enjoy the upgraded versions for free if you upgrade to Microsoft's new console.

Additionally, there is no need to purchase a digital copy of the game in order to take advantage of the Xbox Series X's Smart Delivery benefits. This is huge for people who want to own physical media or have games gifted to them by friends and family. Microsoft has not fully explained how Smart Delivery will work for physical games, but it will likely be one of two ways.

If you pick up a Smart Delivery physical game, it might come with a code that you can enter into the Series X. Or, once you play a game on the Xbox, that game might be "attached" to your account and Smart Delivered to the Xbox Series X or the next system that comes along in the future.

This model would allow you to purchase movies from several major studios (Disney, Fox, Sony, Universal, Warner Bros.) in digital or Blu-ray format, and then watch them on different streaming platforms (Apple TV, Prime Video, Vudu/Walmart ), Google Play, Microsoft Movies & TV, Xfinity, and FandangoNow, all in conjunction with the excellent Movies Anywhere model. When you purchase these films digitally, they will be added to your Movies Anywhere account, and for Blu-ray, you will receive a text-based code to enter on the Movies Anywhere website to add them to your profile.