Blitz3D

Create 2D and 3D Games for Windows.

Free Open Source Windows

Castle Game Engine

An open-source 3D/2D game engine for ObjectPascal. We support of lot of 3D and 2D formats (VRML / X3D, Collada, Wavefront OBJ, MD3, Spine...), we're portable to a lot of platforms (Linux, Windows, Mac OS X, Android, iOS...

Free Open Source Mac OS X Windows Linux BSD

MonoGame

One framework for creating powerful cross-platform games. The spiritual successor to XNA with 1000's of titles shipped across desktop, mobile, and console platforms. MonoGame is a fully managed .

Free Open Source Mac OS X Windows Linux Web GitHub

Wintermute Engine Development Kit

Wintermute Engine Development Kit is a set of tools for creating and running graphical “point&click” adventure games, both traditional 2D ones and modern 2.5D games (3D characters on 2D backgrounds).

Free Open Source Windows

Gamesalad

GameSalad Creator is an authoring tool developed by GameSalad, Inc. (formerly Gendai Games) aimed primarily at non-programmers for composing games in a drag-and-drop fashion, utilizing visual editors and a behavior-based logic system.

Commercial Mac OS X Windows

JMonkeyEngine

JMonkeyEngine3 it’s a free, open source game engine, made especially for Java game developers who want to create 3D games using modern technology.

Free Open Source Mac OS X Windows Linux

Cyberix3D

Free online 3D Game Maker. Make your own 3D games online! Create Games for Web, Mobile and Desktop. Easy to use

Free Windows Linux Chrome OS Web

Source SDK

The Source SDK is a software development kit compiled by Valve Software that is used to create maps or mods for the Source engine, with the exception of Left 4 Dead, Left 4 Dead 2, and Alien Swarm.

Commercial Mac OS X Windows

Phaser

Phaser is a fun, free and fast 2D game framework for making HTML5 games for desktop and mobile web browsers, supporting Canvas and WebGL rendering.

Free Open Source Mac OS X Windows Linux

Xenko Game Engine

Xenko is an open-source C# game engine designed for the future of gaming. It comes with a full toolchain and is especially well suited to create realistic games but allows you much more!.

Freemium Windows

Amazon Lumberyard

Amazon Lumberyard is a free AAA game engine deeply integrated with AWS and Twitch – with full source.

Free Windows

RPG Toolkit

The RPG Toolkit is a free, open source project delivering a simple, flexible and powerful tool for the creation of role-playing games on your personal computer. The homepage also hosts games created with rpgtoolkit.

Free Open Source Windows Linux

Shiva

ShiVa 3D game engine with graphical editor to create applications and games for Windows, MacOS, Linux, iPhone, iPad, Android, Palm WebOS and Wii.

Freemium Windows

Tululoo Game Maker

Tululoo Game Maker is a complex game creation environment that allows you to create browser based games. The program generates a Javascript code that can be played in web browsers using the next generation web standard HTML5.

Free Mac OS X Windows Linux

QICI Engine

QICI Engine is a free and opensource JavaScript library, based on free and opensource game engine Phaser, with a web-based comprehensive suite of HTML5 game making editor.

Free Open Source Mac OS X Windows

Alice

Alice is an innovative 3D programming environment that makes it easy to create an animation for telling a story, playing an interactive game, or a video to share on the web. Alice is a teaching tool for introductory computing.

Free Mac OS X Windows Linux

Open RPG Maker

Open RPG Maker is a free and open source clone of features from the RPG Maker series (i.e. rpgmaker200, rpgmaker2003, rpgmakerxp), as well as many other features.

Free Open Source Mac OS X Windows Linux Mac

Leadwerks

Low-cost video game development engine for Windows platforms.

Commercial Windows Linux

NeoAxis 3D Engine

NeoAxis 3D Engine is positioned as a universal development framework for 3D projects.

Freemium Mac OS X Windows

PlayN

PlayN is a cross-platform game library that allows you to create a single Java codebase that runs in HTML5, Java, Android and Flash.

Free Open Source Windows