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Cordial

Run Roblox on Linux natively — plugins, all yours.

Cordial loads Roblox's official Android x86-64 engine directly on Linux: the AOSP bionic linker, a bionic/glibc shim, a JNI VM in place of Android's, and a framework layer that answers the client's calls. No emulator, no container, no virtual machine.

⚠️ Roblox does not support third-party clients and bans accounts for using them. Cordial does not modify the client, but it presents a synthesised Android environment and a heuristic detector does not owe you that distinction. If your account matters to you, do not use it here.

Get started

• Install and run it
• Where to start — read this first if you want to work on it
• Report a bug
• Browse the source

Current state

Loads libroblox.so natively	✅
App shell reaches APP_READY (Landing)	✅
Renders — Vulkan, GLES2 fallback	✅
Networking / HTTPS	✅
Mouse and keyboard	✅
Stable	✅
Frame rate	✅ ~27 fps on Vulkan
Signed in	❌ not implemented
Plugins	❌ designed, not built

Sign-in is the blocker. The client renders the logged-out landing page and there is not much to do with it until there is a session.

Pages

Where To Start	What works, what is blocking, and what has already been ruled out
Findings	Bootstrap analysis: the architecture verdict and what is unknown
Framework API Inventory	The framework backlog, enumerated from the shipping APK
Path To A Frame	GameActivity, assets and the surface
Answering Not Patching	Why gaps are closed beneath the app rather than by patching it
Instances And Launch	Multi-instance, multi-account and roblox:// handling
ADR 001 No In Process Hooking	Why Cordial has no hooking or script execution, ever
ADR 002 Core Shell And UI Handoff	Shell and UI boundary
ADR 003 Plugin Isolation	How plugins are sandboxed
Base Evaluation	Port-vs-write assessment of the prior art
Multi Architecture	Multi-architecture decision

How this was built

Cordial was written almost entirely by Claude Code — Anthropic's Claude — with the architecture directed by a human. The commit messages are long because each records what was measured and what was disproved. Nobody should assume a human reviewed every line.

This is not an official Roblox client and is not endorsed by Roblox Corporation.