1560 Open source projects that are alternatives of or similar to Cosmo Engine

The classic, refined DOOM source port. For Windows PC.

The quadplay✜ fantasy console

A basic cross-platform 3D game engine

A modern re-implementation of the classic DOS game Duke Nukem II

Classic overhead run-and-gun game

C++11 and SDL2 lightweight 2d game framework

仙三开源版 - The efforts to create an open-source implementation of Chinese Paladin 3

The continuation of the venerable JA2-Stracciatella project.

Intrinsic is a Vulkan based cross-platform game and rendering engine. The project is currently in an early stage of development.

🎮 A list of popular/awesome video games, add-ons, maps, etc. hosted on GitHub. Any genre. Any platform. Any engine.

🎮 JVM game engine based on Swing/JavaFX.

A top-down 2d game engine, written from scratch in under 1000 lines of C. Development of the game based on this engine is streamed on Twitch: https://www.twitch.tv/ryanpcmcquen

⚔️ An online JavaScript 2D Medieval RPG.

ET: Legacy is an open source project based on the code of Wolfenstein: Enemy Territory which was released in 2010 under the terms of the GPLv3 license.

Entitas++ is a fast Entity Component System (ECS) C++11 port of Entitas C#

Hypseus is a SDL2 version of Daphne and Singe. Laserdisc game emulation.

Machine learning games. Use combination of genetic algorithms and neural networks to control the behaviour of in-game objects.

Terasology - open source voxel world

A port of Micropolis to JS/HTML5

The video game that combines elements of the racing and role-playing genres.

Rust library to create a Good Game Easily

Gideros Release version

An open-source 3D colony management game for PC, Mac and Linux

Free implementation of Heroes of Might and Magic II game engine

Entitas is a super fast Entity Component System (ECS) Framework specifically made for C# and Unity

Archived repository. For current repo, see: https://github.com/etlegacy/etlegacy

C++ game engine for Windows, macOS, Linux, iOS, tvOS, Android, and web browsers

a tech demo for a bullet hell game. for the full game visit https://gilmi.me/nyx

Resources for game development on haxe

A cross-platform 2D|3D game framework for the Nim programming language

The Wolf is a comprehensive set of C/C++ open source libraries for realtime rendering, realtime streaming and game developing

A simple platformer about nothing

🎮 GDevelop is an open-source, cross-platform game engine designed to be used by everyone.

MegaGlest real-time strategy game engine (cross-platform, 3-d)

Can you create something cool without modern tools?

Entity Component System framework aiming for syntax and usage simplicity with maximum performance for game development.

Base environment for Red Eclipse and associated source files.

Another NES Emulator - written for fun & learning - first implementation of wideNES

A fast, scalable, distributed game server engine/framework for C++, include the actor library, network library, can be used as a real time multiplayer game engine ( MMO RPG/MOBA ), which support C#/Lua script/ Unity3d, Cocos2dx and plan to support Unreal.

Lightweight and modular C++11 graphics middleware for games and data visualization

Open-source engine for Heroes of Might and Magic III

Build your own Arduino based retro handheld game console

A dead simple 2D game library for Go

A minimalist Flutter game engine

A cross-platform Java game Engine (Framework) , support JavaFX / Android / IOS / HTML5 / Linux / MAC / Windows

Compatible client of Ace of Spades 0.75

KorGE Game Engine. Multiplatform Kotlin Game Engine

A wonderful list of Game Development resources.

An open source re-implementation of Chris Sawyer's Locomotion

Entity-Component-System (ECS) with a focus on ease-of-use, runtime extensibility and compile-time type safety and clarity.

A Future-oriented Adventure Game Framework based on React & Pixi.js. Docs: https://avgjs.github.io/docs/

OpenSAGE is a free, open source re-implementation of SAGE, the 3D real time strategy (RTS) engine used in Command & Conquer: Generals and other RTS titles from EA Pacific. Written in C#. Not affiliated with EA.

An opinionated 2D game engine for Rust

游戏服务器框架，网络层分别用SocketAPI、Boost Asio、Libuv三种方式实现， 框架内使用共享内存，无锁队列，对象池，内存池来提高服务器性能。还包含一个不断完善的Unity 3D客户端，客户端含大量完整资源，坐骑，宠物，伙伴，装备, 这些均己实现上阵和穿戴, 并可进入副本战斗，多人玩法也己实现, 持续开发中。

(DEPRECATED, SEE README)

The BombSquad Game Engine

PyDark is a 2D and Online Multiplayer video game framework written on-top of Python and PyGame.

C++ 3D Game Tutorial Series is a YouTube tutorial series, whose purpose is to help all those who want to take their first steps in the game development from scratch.

🏵 An ultra-minimalist game engine

A tile based adventure game!