GreenOvercast is a native Xbox Cloud Gaming client for small ARM64 Linux handhelds. It streams at 720p and uses the H700 video decoder.
Built for the Anbernic RG35XX-H (muOS) and validated on the RG40XX-H (Knulli).
This independent project is not affiliated with or endorsed by Microsoft.
Requires an Xbox Game Pass plan that includes cloud gaming and internet access.
Copy greenovercast.zip to PortMaster's autoinstall folder, then open
PortMaster to install it. The folder location for each firmware is listed in
the PortMaster FAQ.
When the installation finishes, return to the device frontend and launch GreenOvercast from Ports.
The first launch shows a Microsoft device code. Open microsoft.com/link on another device and enter the code to sign in. Knulli asks you to sign in again after a reboot.
GreenOvercast is experimental and has only been tested on the devices below.
| Button | Action |
|---|---|
| D-pad / Left Stick | Navigate |
| A | Select |
| B | Back |
| X | Open search / delete a letter |
| Y | Change aspect ratio / clear search |
| L1 / R1 | Xbox LB / RB |
| L2 / R2 | Xbox LT / RT |
| Start | Apply search / Xbox Menu |
| Select | Xbox View |
| L3 + R3 | Xbox Guide |
| Select + Start | Exit GreenOvercast after holding one second |
In-game controls use the standard Xbox controller layout.
The aspect-ratio setting applies to the next game you start. Most games only support 16:9.
| Device | OS | Status |
|---|---|---|
| RG35XX-H | muOS 2508.4 | Tested |
| RG40XX-H | Knulli (Batocera 42) | Tested |
Hardware decoding currently only works on H700 devices. Other devices fall back to software decoding, which is too slow for normal gameplay.
The release requires glibc 2.38 or newer. ArkOS ships glibc 2.30 and is not supported.
You need a Linux or macOS host with cmake, curl, git, make, patch,
perl, and python3.
tools/bootstrap.sh # fetch Zig 0.14.1
tools/zig.sh build smoke # cross-build the aarch64 smoke binary
tools/zig.sh build product-check # compile the Zig product modules
tools/zig.sh build test# host unit tests
tools/zig.sh build fmt-check # format checkBuild the release and PortMaster package with:
tools/build-release.sh
PORTMASTER_NEW=/path/to/PortMaster-New tools/package-portmaster.shI would recommend using a sparse checkout of PortMaster-New because she's a big one. Here is a great guide made by JeodC to help you with that.
package-portmaster.sh runs the current PortMaster-New checks and archive
builder. To queue the finished archive for PortMaster's supported autoinstall
flow:
tools/deploy.sh <ssh-host> zig-out/greenovercast.zipLaunch PortMaster from the device frontend to install it. Then launch GreenOvercast from Ports so the frontend owns the display handoff.
MPL-2.0. See LICENSE. The Cedar H.264 decoder is LGPLv2.1 and dynamically linked. Third-party licenses are listed in THIRDPARTY.md.