GeeXLab is described as 'Cross-platform demotool for 3D programming, demos creation, game development, interactive applications, creative coding and prototyping' and is a game development tool in the development category. There are more than 50 alternatives to GeeXLab for a variety of platforms, including Windows, Mac, Linux, Web-based and Android apps. The best GeeXLab alternative is Godot Engine, which is both free and Open Source. Other great apps like GeeXLab are Unity, Unreal Engine, GDevelop and Wick Editor.
Orx is an open source, portable, lightweight, plugin-based, data-driven and extremely easy to use 2D-oriented game engine. Orx is mostly written in C, but allows you to develop with it with any language that can interface to C.
HaxeFlixel is a 2D Game Engine that lets you create cross-platform games easier with free, open source technology!
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.
Build games and applications for almost every platform imaginable -- Windows, Mac, Linux, iOS, Android, BlackBerry, Firefox OS, Tizen, Flash and even HTML5.
Rogue Engine is a full featured environment for game development using WebGL. Create projects in an intuitive and familiar 3D environment using configurable components made with TypeScript.
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.
Revolutionizing game development, make any game you want without a line of code! 3D, 2D, even multiplayer games!
Flixel is and open source game-making library in ActionScript3. Designed for use with free tools Flixel is easy to learn, extend and customize.
Amulet is a free Lua-based audio/visual toolkit suitable for small games and experimentation. It runs on Windows, Mac, Linux, HTML5 and iOS.
Heaps is a cross platform graphics engine designed for high performance games. It's designed to leverage modern GPUs that are commonly available on desktop, mobile and consoles.
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.
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