Open-source alternatives to Duality

Awesome list of resources for Game Engine Development.

A game framework written with osu! in mind.

Go 3D Game Engine (http://g3n.rocks)

A small C# game framework

DotRecast - a C# port of Recast & Detour, Industry-standard navigation mesh toolset for .NET, Unity3D, games, servers

A lightweight, easy-to-use, and efficient library for processing and rendering 3D data (C++ & Python)

jMonkeyEngine is a Java-based 3D game engine and cross-platform graphics framework. It provides the core tools necessary for developing three-dimensional games and interactive simulations, focusing on real-time rendering and the management of spatial environments. The engine includes a dedicated 3D physics simulation toolkit for handling rigid body dynamics and collision detection. It also features a game asset pipeline for importing and managing 3D models, textures, and audio files during runtime. The framework covers broad capability areas including 3D scene rendering, physics-based simula

Classic point and click adventure game engine and editor

A free JavaScript game engine library with a web-based comprehensive suite of toolset for making HTML5 games. http://www.qiciengine.com

Game engine for making 2d games on iOS, macOS and tvOS, with practical examples and tutorials

Ambient is a cross-platform multiplayer game engine and runtime environment developed in Rust. It provides a system for building and deploying high-performance games that run across web browsers and desktop platforms using WebAssembly and WebGPU. The project features a networked database that automatically replicates real-time state and components between servers and players. It utilizes WebAssembly sandboxes to isolate game logic, which prevents individual script crashes and allows for the secure execution of untrusted code. The framework includes a graphics system for high-fidelity 3D visu

Flame is a 2D game engine for Flutter and Dart. It provides a component-based game framework for managing entities and their lifecycles through a hierarchical architecture, alongside a dedicated system for game asset management and input handling. The engine distinguishes itself through a specialized integration layer for external physics engines to handle rigid body dynamics and collision detection. It also features a high-performance task model that uses isolates to offload heavy computations and prevent main thread blocking. The framework covers a broad range of capabilities including vis

This is a web-based 3D game engine designed for creating high-performance interactive experiences on web and mobile platforms. It functions as a real-time graphics renderer and physics engine, utilizing a component-based scene graph to organize entities and their properties for three-dimensional rendering. The engine includes a visual scene editor that allows for the design of environments through a graphical interface, which then exports these assets as executable code. Its broader capabilities cover real-time graphics rendering for 2D and 3D elements, physical world simulation for object c

Piccolo is a mini game engine designed for building small-scale games with cross-platform support. It compiles and runs on Windows, macOS, and Linux from a unified codebase, and includes an editor integration for live editing and debugging. The engine uses a component-based entity system with data-oriented design, storing component data in contiguous arrays for cache-friendly iteration. It features a fixed timestep game loop that decouples simulation updates from rendering frame rate, and provides a physics debug overlay that renders visual shapes from simulation data synchronized with the ed

Coffee-Physics is a lightweight physics engine designed for two-dimensional particle simulation within web environments. It provides a framework for managing the movement and physical interactions of individual objects across a coordinate system, utilizing a collection of mathematical functions to calculate trajectories and collision responses. The library employs Verlet-based integration to maintain stability by tracking coordinate history, avoiding the need for explicit velocity or acceleration variables. It enforces deterministic behavior through fixed-step time stepping, which ensures con

A curated list of awesome things related to Roblox OSS.

High-performance Vulkan driver with automated resource management and execution

FXGL is a 2D game engine and development framework designed for Java and Kotlin. It provides a structured environment for building cross-platform desktop games, integrating a central game loop with an entity component system and a JavaFX-based scene graph for rendering. The toolkit distinguishes itself by providing a comprehensive suite of integrated libraries for game AI pathfinding, physics collision resolution, and multiplayer networking via TCP and UDP protocols. It includes specialized systems for adaptive user interface design using global stylesheets and a data-driven asset management

Fully auto-generated Common Lisp bindings to Raylib (6.0/5.5) and Raygui (4.0) using claw and cffi-object

My LD55 entry made with Odin and Raylib.

An easy-to-use but flexible game framework based on Raylib for Common Lisp.

bgfx is a cross-platform, graphics rendering abstraction layer designed for high-performance applications. It provides a unified interface that maps high-level rendering commands to native graphics APIs, allowing developers to maintain a single codebase that executes consistently across diverse operating systems and hardware architectures. The library distinguishes itself through a multi-threaded command submission model that decouples rendering logic from the main application thread, effectively minimizing CPU bottlenecks. It utilizes a backend-agnostic command buffer and a deferred resource

Library for getting into gamedev with Common Lisp! Very simple interface to graphics, audio and input.

Tiled is a visual editor for creating two-dimensional game environments, functioning as a tile map editor and game level design tool. It allows for the construction of game worlds by arranging reusable tile sets and assets into maps. The system includes a tile set manager to organize and modify collections of tiles that can be shared across multiple project maps. It supports the creation of complex environments through layered map composition and the placement of objects at precise coordinates. The editor provides capabilities for grid alignment, coordinate-based layouts, and the attachment