The Steam Link app brings desktop gaming to your iPhone or iPad

Just pair an MFI or Steam controller to your device, connect to a computer running Steam on the same local network, and start playing your existing Steam games.

Requirements:

* iPhone or iPad using iOS 11.0 or higher

* Computer running Steam - Windows, Mac, or Linux

* iOS device must be on the same local network as the computer running Steam

For best performance:

* Connect your computer using Ethernet to your 5Ghz WiFi router

* Connect your iOS device to the 5GHz band of your WiFi network

* Keep your iOS device within a reasonable range of your router