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* AbyssalEngine - A professional commercial grade rendering engine and toolset
* Agar (engine) – A high-level graphical application framework used by 2D and 3D computer games
* Aleph One (computer game) - Open-source first-person shooter engine based on the source code of Bungie Studios' Marathon 2: Durandal.
* Allegro library – A free crossplatform C/C++ game programming library, provides functions for graphics, sounds, input, timers, fixed and floating point, 3d, compressed datafile and a GUI.
* Game Blender – flexible node based game logic engine Blender 3D
* Boom – A port of the Doom source code by TeamTNT
* Box2D - A cross-platform physics and graphic engine.
* ClanLib – A free cross-platform (including Mac OS X), object-oriented C++ game programming library.
* Crystal Entity Layer – An extension of the Crystal Space 3D Engine
* Crystal Space – A general framework for developing 3D applications
* Cube – Powers the computer game of the same name
* DarkPlaces – Heavily modified version of quake engine which supports modern graphics
* Delta3d – Integrates other well-known free software projects into an easy-to-use API, originally developed by the U.S. Navy
* Doom engine – The now free software engine originally used for the hugely popular Doom and Doom II
* DXFramework – A simple, pedagogical 2D/3D DirectX-based game engine for Visual Studio
* Eternity Engine – A source port of the Doom engine
* Exult – A free software reimplementation of the Ultima VII game engine
* FIFE – A free software 2.5D isometric game engine.
* GZDoom – A source port of the Doom engine based on ZDoom
* Genesis3D – A real-time 3D engine for Windows
* Genesis Device Is a powerful LGPL engine
* id Tech 2 – Formerly known as the Quake II engine, the original open-source engine from id Software
* id Tech 3 – Formerly known as the Quake III engine, the original open-source engine from id Software
* ioquake3 – An updated fork of the GPL'ed id Tech 3 engine
* Irrlicht Engine – A cross-platform and lightweight three dimensional graphics engine.
* jMonkeyEngine – An open-source, BSD licensed Java scenegraph engine.
* Jogre – A Java based client/server game engine and API for online real time games such as chess, checkers, etc.
* KallistiOS – A free, BSD licensed development library for the Sega Dreamcast, by Dan Potter.
* Lightfeather 3D Engine - A cross-platform, zlib licensed, real-time 3D graphics engine.
* Nebula Device – A realtime 3D game engine developed by German game studio Radon Labs.
* OGRE Engine – A very popular object-oriented graphics rendering engine. Also called OGRE3D
* ORX - A portable, lightweight and data-driven 2D-oriented game engine.
* Panda3D – A relatively easy to use python-driven game engine made by Carnegie Mellon University. Disney uses it to produce some of their games.
* PLIB – A game engine – includes 3D, Audio, Music, GUI, Window manager and is portable Linux/Windows/Mac OS X.
* ProQuake – A modified Quake engine
* Quake engine – The original open-source engine from id Software
* RealmForge – An open-source game engine for the Microsoft .NET Framework, predecessor to Visual3D.NET.
* Retribution Engine – A game engine to make first person shooter games
* Sauerbraten – An upgraded engine forked from the Cube engine
* Simple DirectMedia Layer - A powerful multimedia library.
* SFML - A Simple and Fast Multimedia Library used for a wide range of applications and games.
* Spring - a full 3D free/open source RTS game engine
* Stratagus – A cross-platform real time strategy game engine
* Xilon Engine II - An open source game engine developed under Visual Basic .NET.
* Adventure Game Studio – Mainly used to develop third-person pre-rendered adventure games, this engine is one of the most popular for developing amateur adventure games.
* Build engine – A first-person shooter engine used to power Duke Nukem 3D
* Daybreak motor – Flexible, object-oriented graphics rendering engine for .NET and XNA (XNA 3D Game Engine) Currently in development.
* dim3 – Freeware 3D javascript engine for the Mac (although finished games are cross platform).
* DX Studio – Real-time professional 3D engine and editing suite produced by Worldweaver Ltd
* Flatredball – A 2.5D XNA and MDX game engine.
* Game Blender – A sub-application of Blender for creating games
* Game Maker Lite – Object-oriented game development software with a relatively complex scripting language as well as a drag-and-drop interface
* Jogre - (Java Online Gaming Real-time Engine) - Open sourced Java based multiplayer gaming engine.
* M.U.G.E.N – A 2D fighting game engine
* Panda3D – (Releases prior to May 28, 2008) A relatively easy to use python-driven game engine made by Carnegie Mellon University. Disney uses it to produce some of their games.
* PhyreEngine - A cross platform (PC & PS3) graphics engine from Sony Computer Entertainment.
* World Builder – A pre-Mac OS X game engine.
* Wintermute Engine – A runtime and development tools for creating 2D and 2.5D point'n'click adventure games.
* Alamo - the engine used in Star Wars: Empire at War by Petroglyph Games
* Aurora Engine – For Role-playing games
* Blade3D - easy to use toolset mostly targeting Indies, for XNA based games that run on Windows and XBox360.
* BRender – A real-time 3D graphics engine for computer games, simulators and graphic tools
* C4 Engine – An emerging next-generation computer game engine created by Eric Lengyel
* Coldstone game engine – An old game creation suite for Macintosh/Windows to create role-playing or adventure-style games
* CryEngine, CryEngine 2 – The game engine used for the first-person shooter computer game Far Cry. CryEngine 2 is a new generation engine developed by Crytek to create the FPS game Crysis.
* Crystal Tools – Square Enix's proprietary seventh generation game engine.
* Dagor Engine 3 – A high-tech cross-platform game engine (3D, physics, game logic) with rich toolset for content development
* id Tech 4 – (Also known as Doom 3 engine) Used by the games Doom 3, Quake 4, Prey and Quake Wars (Will become Open Source at a later date)[1]
* id Tech 5 - Currently in development by id Software as engine for their games, Doom 4 and Rage, and as a general purpose engine to be licensed
* DX Studio – Engine and editing suite that allows rapid creation of real-time games and simulations
* Dunia Engine – Engine made especially for FarCry2 (made by ubisoft and not to be mistaken as a crytek game)
* Earth-4 Engine – The graphics engine used in Earth 2160
* Electron engine – Developed by Obsidian Entertainment for their game Neverwinter Nights 2, based on the Aurora engine
* Elflight Engine – High-performance cross-platform 3D streaming game engine designed from the ground up for use over the Web. Games can play in a web browser window, in a separate window or full-screen. Java and OpenGL based.
* Enigma Engine – A real-time tactics game engine, used in Blitzkrieg.
* Euphoria – This is not a game engine, It is powered through your game engine's physics, this is a Biomechanical Ragdoll engine by NaturalMotion
* Explorations – 2D MMO creator
* FPS Creator - A game engine by The Game Creators. It lets the user create their own First Person Shooter without any knowledge of scripts.
* Freescape (1986) – Incentive Software; One of the first proprietary 3D game engines, used in Driller and 3D Construction Kit
* Frostbite Engine – Game engine used for the next-gen title Battlefield: Bad Company
* Gamebryo – A cross-platform game runtime engine and associated tools coded in C++
* Gamestudio (A7) – The engine behind the Gamestudio Authoring system
* Glacier, Glacier2 – Developed by IO Interactive and used for the Hitman series of games. Glacier2 being a new generation engine currently in development for upcoming games.[2]
* GrimE - Used in LucasArts graphical adventure games starting with Grim Fandango
* Havok – High-tech cross-platform (PC, PS3, Xbox 360 etc) middleware engine
* HeroEngine - 3D game engine by Simutronics for building MMOs in a live collaborative environment
* IMUSE – Specifically designed to synchronize music with visual action
* INSANE – Used in LucasArts games
* Infinity Engine – Allows the creation of isometric computer role-playing games
* Jade engine – Developed by Ubisoft, originally for Beyond Good & Evil
* Jedi – A game engine developed by LucasArts for Star Wars: Dark Forces and Outlaws
* Kaneva Game Platform – A full featured MMOG engine for independent and professional game development
* Kinetica - A game engine developed by Sony for PlayStation 2.
* Leadwerks Engine - Leadwerks Engine is a high-performance 3D engine for rendering, sound, and physics in real-time games and simulations.
* Lithtech – A competing alternative to the id Tech and Unreal engines.
* Lithtech Jupiter Ex – A new generation Lithtech engine developed by Monolith Productions to create the game F.E.A.R.
* Medusa – A C++ 3D game engine developed by Palestar and used in the DarkSpace MMO. It features distributed world simulation, single tool version control and asset realisation, cross-platform compatibility and an integrated client/server network system.
* Monumental Technology Suite – A MMOG platform, including server and client technology and development / live management tools.
* Multimedia Fusion 2 – Full featured very easy to use 2D game development system.
* Multiverse Network – An MMOG platform, including server, client, and tools. (Free for development and use — revenue sharing upon commercial deployment).
* Offset Engine – In development, being used to create fantasy FPS Project Offset (working title)
* Odyssey Engine – Used to create three dimensional computer role-playing games, used in Star Wars: Knights of the Old Republic
* Onyx Engine – Developed by Ubisoft
* Quest3D A game engine and full real-time 3D development platform. Used in for instance AudioSurf.
* RAGE – A game engine created by Rockstar Games to power their upcoming video games on the Xbox 360 and PlayStation 3. Implemented in Grand Theft Auto 4.
* Realm Crafter Standard Edition – A 3D MMORPG specific game engine with an easy click-and-drop design. Easy to learn scripting language.
* Realm Crafter Pro Edition – A 3D MMORPG specific game engine with an easy click-and-drop design. Easy to learn scripting language with DirectX 9 graphics engine, a completely rewritten C++ client and server, and a new game editor for high performance modern graphics with customizable shaders.
* RelentENGINE – A next-generation FPS engine supporting massive destroyable city environments and realistic vehicle control, makes extensive use of shader model 3.
* RenderWare – A very popular 3D API and graphics rendering engine
* Revolution3D – A 3D graphics engine developed by X-Dream Project
* RPG Maker XP – A 2D engine to make top-down and isometric-style role-playing games for Windows.
* SAGE engine – Used to create real-time strategy games
* SCUMM engine – Used in LucasArts graphical adventure games
* Serious Engine – The engine by Croteam used in the epic Serious Sam: The First Encounter and The Second Encounter
* Shark 3D – A middleware from Spinor for computer, video games and realtime 3D applications
* ShiVa - A game engine with an authoring tool to produce 3d real time applications for Windows, Mac OS X, Linux and iPhone.
* Silent Storm engine – A turn-based tactics/tactical RPG game engine, used in Silent Storm.
* Sith – A game engine developed by LucasArts for Jedi Knight: Dark Forces II
* Source engine – A game engine developed by Valve Software for Half-Life 2
* Torque Game Engine – A modified version of a 3D computer game engine originally developed by Dynamix for the 2001 FPS Tribes 2
* Torque Game Engine Advanced – A next-generation 3D game engine support modern GPU hardware and shaders.
* TOSHI – A fourth generation cross platform game engine designed by Blue Tongue Entertainment
* Truevision3d – A 3D game engine using the DirectX API
* Unigine – Cross-platform middleware engine
* Unity – An easy-to-use open-ended 3D game/interactive software engine for web, Windows, Mac OS X, the iPhone, and Nintendo Wii
* Unreal Engine – One of the most popular game engines for PC, Xbox 360 and PlayStation 3
* Vengeance engine – A video game engine based on the Unreal Engine 2/2.5
* Vicious Engine – Available for Microsoft Windows, Sony PlayStation 2, Microsoft Xbox, and Sony PlayStation Portable
* Virtools – A 3D engine combined with unique high-level development framework, used for game prototyping and rapid developments. Available for Windows, Macintosh, Xbox, PSP
* Visual3D.NET Game Engine - All-in-One 3D game engine and toolset, fully written in C#/.NET for Windows and Xbox360.
* WGAF – The game engine developed by Guild Software which powers their MMORPG Vendetta Online
* XnGine – Developed by Bethesda Softworks, one of the first true 3D engines
* X-Ray Engine - A 3D engine with advanced AI abilities developed by GSC Game World for their Oblivion Lost project (later renamed to S.T.A.L.K.E.R.: Shadow of Chernobyl).[citation needed]