Open Source C++ Game Engines for ChromeOS

3D game engine (more powerful redesign of the Cube engine) and FPS game

GemRB (Game engine made with pre-Rendered Background) is a portable open-source implementation of Bioware's Infinity Engine. It was written to support pseudo-3D role playing games based on the Dungeons & Dragons ruleset (Baldur's Gate and Icewind Dale series, Planescape: Torment). It should run on GNU/Linux, Microsoft Windows, OS X, possibly other UNIX derivatives and more. It is licensed under the GPL.

Orx is a portable, lightweight, plugin-based, data-driven and extremely easy to use 2D-oriented game engine. As orx is data driven, it allows users to create games with a small number of lines of code and reduces drastically the development time.

Haxima is an Ultima-like game engine (2D tile graphics) with combat, magic, NPC AI, an embedded scripting language, and in-game editing.

KlayGE is an open source, cross-platform game engine with plugin-based architecture. It provides a framework to make game development, testing, porting as simple as possible.

Trial of Aolis is a game in planning stages. It will be a 2-dimensional (possibly with some 3D elements) adventure in the style of classic games such as The Legend of Zelda or Final Fantasy. It will be built on an engine named the Aolis Engine. To speak with project members visit the IRC channel #aolis on the Freenode network: http://webchat.freenode.net/?channels=#aolis

The Bad Monkey Engine is designed to function as the core engine for game development. Its architecture fully supports cross-platform game development by abstracting all platform specific code into general purpose utility classes. The primary platform is WinTel with parallel development occurring for Unix-based operating systems. Console-based platforms are not available yet due to the restricted nature of the APIs for these platforms.

Using C++, STL, OpenGL, SDL, Box2D and ODE. This project strives for platform independance, code readability and speed. The main target is to provide a convincing driving and physical simulation through the use of ODE at a reasonable frame rate.

This project aims to create a fast game engine that is simple to use. It will support rendering in OpenGL and DirectX and run on Linux, Windows and Android. It even runs in the browser with WebGL through emscripten. It was originally used to create a round-based 3D multiplayer role-playing game called Heroquest. Now, the main focus has shifted to create a portable point-and-click adventure system and some adventure games.

Crimild Engine is an open source scene graph based engine which purpose is to fulfil the high-performance requirements of typical multi-platform two and tridimensional multimedia projects, like games, simulations and virtual reality.

Frost Engine is an RTTRPG game engine.

This game engine uses the power of C++, OpenGL, and OpenAL to provide highly-portable, object-oriented code for programming a video game. Rather than tailoring to a specific type of game, the engine focuses on the fundamental components. It covers audio, graphics, controls, and data flow. With G2, developers have everything they need to create a 2D game without the need of expensive SDKs.

Gear2D is a C++ cross-platform component-based data-driven game engine. It supports component loading at runtime and defining game objects using YAML and sharing parameters between components in a transparent manner.

The Humm and Strumm Engine is a Free Software 3D game engine. Its goal is to provide a properly multithreaded, scalable engine to the FOSS community under the GPLv3 license, to encourage FOSS gaming.

JGachine (Java Game machine) is a networked game engine for 2D multi-player (networked) games. JGachine is written in Java and C++. The games themselves are written in pure Java and can be loaded via network. (JGachine as game browser)

Just Another Game Engine ("Jaggie" for short) is a 2D game engine built on SDL and targeted for Pentium 4/Athlon XP and later processors.

LASengine is a powerful game engine to create 2D point-and-click adventure games. It uses LUA as the scripting tool.

The Lambda-Engine is a cross platform game engine written in C++. It simplifies core tasks, such as rendering/graphics, sound, physics, math, scene and resource management. It is still *far* from finished, but I am working on it :)

Longford is a 2D, Lua-based game engine for Windows. It has the following features: + Sprite hierarchy. Sprites drawn in order according to a display "tree" allowing grouping of complex drawings. + Frame update, keypress and (multi)touch events which propagate through the display tree. + Creation of Sprites including polygon Shapes and rectangular Bitmaps with transparency (import as PNG, JPG, GIF, BMP, TGA) + Creation of Textfields based on bitmap fonts. + Translation, rotation and scaling of sprites. + Box2D physics engine. + Play sound effects using WAV files and stream music using OGG files. + Automatic tweening system + Texture atlases so that many Bitmaps can be "cut out" of a single larger picture file. + Supports user-written shaders for advanced graphic effects. + Automatic resolution scaling. + Supports OpenGL or DirectX backend

Mona Game Engine is a portable, modular and multithreaded game engine.

Engine desenvolvida em C++ utilizando ODE (Open Dynamics Engine) e OpenGL, para desenvolvimento de jogos e pequenas simulações fisicas.

An object-oriented Game Engine. It abstracts the differences between platforms and allows level/scene coding through script/XML files. Subsystems based on open source libraries. Adaptable to multiple game genres (fps, space shooter, indoor, outdoor, ...)

OpenReality will be a 3D Engine Library for development of Games, Virtual Reality and 3D Visualization applications. It will be very intuitive, and strongly object oriented. Of course, performance will have a great weight on the project´s decisions.

A game engine for running Ultima 8 on modern operating systems.

Action/RPG Game Engine. Overall game engine is to be open source, but not the art assets.