Stream PC games to the Steam Deck without leaving Gaming Mode

The Punktfunk Decky plugin puts your hosts in the Quick Access Menu and on Steam's own Play button, so streaming stays in Gaming Mode.

Streaming your PC to a Steam Deck shouldn't mean dropping to Desktop Mode each time. Punktfunk's Decky plugin keeps it in Gaming Mode.

Set up once

You need Decky Loader, and one trip to Desktop Mode to install the Punktfunk client, a Flatpak. The plugin isn't in the Decky store: install it from a URL in Decky's developer settings. Later, Update Punktfunk in the panel updates both without leaving Gaming Mode.

What you get

• A Punktfunk panel in the Quick Access Menu: your hosts, pairing by PIN or Request access, and one tap to stream fullscreen.
• Stream on Steam's Play button: on a game's page, press ▾ beside Play and pick a host that has the game. The Deck doesn't need it installed.
• A stream at the Deck's own 1280×800, or at your dock's screen size.

Controls

The plugin installs a Steam Input layout called Punktfunk. With Steam Input on, the Deck is a standard gamepad and the touchscreen reaches the host as touch. With it off, the host gets a full Steam Deck pad with paddles, both trackpads and gyro. Set it per game. Hold L1 + R1 + Start + Select for about 1.5 seconds to leave.

Full steps: Steam Deck (Decky). For a host with no monitor: headless streaming on Linux.