Azeroth Survivors on Mobile, iPad, and Steam Deck

The official client has a touch path. It is not a separate app store build. A phone browser with a coarse pointer gets on-screen controls, a fullscreen attempt, and a landscape lock where the browser allows it. iOS Safari has neither element fullscreen nor a reliable landscape lock, and the boot script no-ops a missing webkit fullscreen call so the wasm can still start.

Device	What to expect
Android Chrome	Touch controls. The boot script skips the heavy shader warm pass and can use a lighter material, because some Adreno compilers crashed the GPU process.
iPhone and iPad	All browsers are WebKit. You still need WebGPU. Fullscreen is not the desktop gesture. Hold the device in landscape yourself.
Steam Deck	Not named as a target. Try the desktop site in a WebGPU browser. If the adapter is missing, read the WebGPU page. Do not download a Deck “port” from a third party.
Controller	The client exposes gamepad options, including stick dead zone and camera invert, in the published control notes.

If the phone shows a black canvas, start with WebGPU and then the crash log. The Windows archive does not install on a phone.