It only took a year, but Valve's Steam Link app is now available on the App Store for both iOS devices and Apple TV. Apple originally declined it in part because they could buy games on Steam without Apple losing out. Therefore, only our friends on Android devices could use the feature in the last 12 months.
But that's all behind us now. Now that Steam Link is available, you can enjoy your Mac or PC games with the relative freedom and convenience of an iPhone or Apple TV – at least if you have a strong connection . We'll first explain what you need before you get into a game, and then guide you through the set up steps. We also help you with troubleshooting. It took a long time, so do not waste any more time!
The following is required:
You may have heard of Steam's separate Steam Link hardware, but do not worry – you will not need it if you plan to stream to an iOS device or have an Apple TV , With the exception of the controller, you probably already have everything you need.
An iPhone or iPad with at least iOS 10 or an Apple TV
A host iMac or MacBook or a running PC either Windows or Linux. Regardless of the system, Steam must also be installed.
(Highly recommended.) A Steam controller or MFi controller. We recommend the Rotor Riot because it is the only MFi controller that currently supports the commonly used Thumbstick buttons "L3" and "R3".
Both the host computer and the iOS device / Apple TV must be on the same network.
Valve indicates that you can make the most of the Steam Link app if your host computer is connected to an Ethernet cable and a 5 GHz wireless router (although a 6 GHz router is preferable) , Your Apple TV or iOS device must also be on the same 5 GHz network. For better results, keep your iOS or Apple TV near the router.
Again, you need a strong connection if you expect Steam Link to work remotely. And even in the best case, Steam Link games are not popular for games that require fast, restless response times, such as: Eg first-person shooter. Unless you have a Google Fiber connection or similar, it's currently best for slower games that are not affected by the inevitable delays.
How to set up Steam Link on iPhone, iPad, and Apple TV  The focus here is on the iOS version, but the steps are about the same for Apple TV. All you have to do is search for the Steam Link app in the tvOS App Store.
. 1 Turn on your Mac or PC and open Steam. Make sure both the iOS device (or Apple TV) and the host computer are on the same network.
. 2 Download and open the Steam Link app on your iPhone. Here is the link for iOS, but under tvOS you need to navigate there via the Apple TV App Store.
. 3 Once the app is open, press the large blue button First Steps . The Steam Link app then searches for computers on the same network.
4. A menu for Pair Controller is displayed. If you have an MFi controller or a Steam controller, plug it in and Steam Link will immediately proceed to the next step. (If you've already connected a gamepad, Steam Link skips this step.) You can use touch controls on iOS, but they're awkward – and you need an Apple TV controller. However, if you want to live dangerously on the iPhone, press Use Touch Control and Steam Link will proceed to the next step.
5. Press the name of the computer you want to use as a host from the list.
6. Then, a PIN number will appear in the Steam Link app on your iOS device or Apple TV.
7. On your host computer, should also display a popup of Steam entitled Device Authorize . At this prompt, enter the PIN of your iOS device. Press OK .
8. The Steam Link app on your iOS device will then test your connection and tell you what streaming speeds you can expect. Press OK when the process is complete.
9. On the next page, you want to see three checkmarks for your host computer, controller, and connection. You will only see a checkmark for your connection if you reach download speeds of at least 100 MB / s. (This is the biggest hurdle for most people, though you can still play with a weak connection.)
10. If you are cool with all that, press . Start the game .
Here you might encounter some speed bumps. If you're using an MFi controller, Steam will display shortcuts to standard gamepad controls that normally can not be used with MFi controllers. Again, the Rotor Riot is one of the few exceptions. If you've selected touch controls, Steam Link will display even more complex shortcuts for them. Press Next .
Steam may need to download new drivers. In this case, a warning will be displayed on your iOS device stating that streaming requires additional driver installation. Follow the Steam instructions on the remote computer. On the Mac / PC, Steam should display a message saying "Gamepad Driver Update: Steam needs to update the gamepad driver, which may require a system reboot." Are displayed. Press Install at the bottom right and follow the steps. On a Mac, you may need to allow the installation to bypass your security settings. You should also restart your Mac. Once this is done and you have Steam open again, press Start Playing on your iOS device again.
11. On the host computer, Steam should be opened in Big Picture mode (Gamepad-friendly mode) and the feed streamed to your iPhone, iPad, or Apple TV. Find Your Games at Library and play them!
12. To stop streaming to Steam Link, press the menu key (or equivalent) on your MFi controller, and then scroll to the power icon in the upper-right corner of the Big Picture interface. Press it.
13. You see some options. To immediately stop Steam Link on your iOS device or Apple TV, press Stop Streaming . Steam Link should close then. If you do not disable Steam Link this way and try to close the app in IOS, the Big Picture mode will still play on your Mac or PC, and you'll need to turn it off separately.