Top GAMING GitHub Repositories & Tools (2026)

Run Windows games on Apple Silicon — free, open source, with an open compatibility database that tells you what actually works.

A beautiful, powerful, self-hosted ROM manager and player.

Lutris desktop client

Custom GeForce Now Client Named OpenNOW

PlayStation 2 emulator for Android with a PCSX2-based core adapted by EmuCoreX, a modern game library, live overlay controls, and a handheld-focused experience.

Enterprise Goldsvet crypto casino engine with 100% open-source code, 2500+ slots API, sportsbook module, and zero-fee local blockchain payments.

The great gaming migration to Linux

Lenovo Legion Toolkit (LLT) is a Windows desktop utility created for Lenovo gaming laptops that replaces Lenovo Vantage, Legion Zone, and Legion Space.

Lovingly referred to as the Swiss Army Knife of PC gaming, Special K does a bit of everything.

Nvidia GPU exporter for prometheus using nvidia-smi binary OR using NVML

A native GeForce NOW client for Apple TV and Apple Vision Pro. Stream your entire PC game library directly on tvOS and VisionOS with full controller support, no browser, no workarounds.

[Experimental] Run multiple gaming sessions on a single GPU

The modern way to play QUAKE 4.

The DLL responsible to integrate emulators with RetroAchievements.org

Your Windows gaming PC, with the soul of a gaming console.

One code, and you're in the same room. Remote multiplayer between Android emulators: 3DS, Switch, PSP, PS2, DS and WII.

Turn your Windows PC into a couch console. A free, controller-friendly front end in three shells — a channel grid, a blade dashboard and a media bar — with an optional, carefully guarded shell mode. Very early beta.

Open-source ultrawide Hor+, FOV and native centered HUD patch for METAL GEAR SOLID 4 (Master Collection) on PC, with MGSFPSUnlock integration for 120 FPS

Tender — your RomM library, running native in Steam. Decky Loader plugin for the Steam Deck: library sync, ROM downloads, BIOS management and save sync.

A cross-platform virtual tabletop for multiplayer card games