DroidDeck 0.4.0 adds foldable screen support and GOG integration

The open-source DroidDeck project has released version 0.4.0, adding dynamic screen resolution support for foldable phones and direct library integration for GOG, Epic Games, and Amazon Games.

Originally launched in September 2026, the software wraps a Linux runtime, FEX x86 translation, and Proton into an Android app to run Windows PC games on mobile hardware. It boots directly into Valve's Steam Big Picture mode. The DroidDeck GitHub repository hosts the new update.

Resizing for foldables

The headline feature for version 0.4.0 is 'Follow screen resolution' for foldable devices. This automatically resizes the Steam client and active games when folding, unfolding, or rotating the device. It also adds an optional on-screen touch gamepad displayed below the game on unfolded foldables.

You can see the touch gamepad layout in the release notes. It is a virtual interface, rather than support or mapping for physical foldable hardware gamepads or a follow-screen landscape mode.

Pulling from other stores

The update builds in a storefront manager that signs into GOG, Epic Games, and Amazon Games. It downloads titles directly to your device storage and automatically adds them to the Steam client as non-Steam games. It all launches through Proton.

The release also includes a full KDE Plasma 6.7 desktop replacement and beta support for native Steam touch controllers. A separate landscape orientation image shows the desktop scaling.

I'm curious how well the four-player local co-op actually runs in practice. It's already a heavy lift to emulate Windows on Android. Asking a phone to handle four Bluetooth controllers and split-screen rendering sounds like a great way to melt a battery.

Translation layers

Running PC games on a phone requires multiple layers of translation. FEX handles the CPU side by translating x86 instructions into ARM64. Proton steps in for the graphics, using DXVK and VKD3D to translate DirectX calls into Vulkan. DroidDeck relies on custom Turnip Vulkan drivers to talk to the phone's GPU.

The project even includes LSFG frame generation adapted from Lossless Scaling, though you'll need your own copy of the software to use it.

Snapdragon 8 Gen 1 or newer

Hardware requirements remain strict. You need a device with a Qualcomm Adreno 730 or newer GPU, which generally means a Snapdragon 8 Gen 1 or later. Older Adreno 6xx chips are experimental. DirectX 11 games might run using DXVK 2, but DirectX 12 titles will probably crash. Mali, Xclipse, and PowerVR GPUs are completely unsupported.

The installation requires Android 9 or newer and doesn't need root access. You'll need about 3GB of storage for the base runtime, plus another 1.1GB if you want the desktop environment and emulators. Valve proved the handheld PC concept with the Steam Deck in 2022. DroidDeck's trying to brute-force that exact software experience onto hardware that already lives in your pocket.