Top GAM GitHub Repositories & Tools (2026)

Custom GeForce Now Client Named OpenNOW

An open source re-implementation of RollerCoaster Tycoon 2 🎢

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.

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.

C# application with primary purpose of farming Steam cards from multiple accounts simultaneously.

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

Widelands is a free, open source real-time strategy game with singleplayer campaigns and a multiplayer mode. The game was inspired by Settlers II™ (© Bluebyte) but has significantly more variety and depth to it.

Polytoria, a multiplayer gaming platform built with Godot and .NET

Modern C++ high level GBA engine

🖥 Control your display's brightness & volume on your Mac as if it was a native Apple Display. Use Apple Keyboard keys or custom shortcuts. Shows the native macOS OSDs.

A mod to make and play Terraria mods. Supports Terraria 1.4 (and earlier) installations

Arcade kart racer in the spirit of Mario Kart, built entirely with Three.js. 100% procedural assets. Built by five Claude Fable 5.1 sub-agents from one prompt.

A dead simple 2D game engine for Go

Redot Engine – Multi-platform 2D and 3D game engine

AI Skills, MCP Tools, and CLI for Unity Engine. Full AI develop and test loop. Use cli for quick setup. Efficient token usage, advanced tools. Any C# method may be turned into a tool by a single line. Works with Claude Code, Gemini, Copilot, Cursor and any other absolutely for free.

Tiny fast HTML5 game engine with many features and no dependencies.

XMage - Magic Another Game Engine

Free, open source game server management panel built on Laravel and Docker.

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

One of the most popular modern web proxies with blazing fast speeds and a variety of games.