Creating 3D Games has never been so interesting.

A complete development tool for free!

    Download Now  

Short Summary

Introducing the KZX Engine by Grand Dog Studio, a powerful 3D game engine for creating immersive games in both 2D and 3D perspectives. Built on the Overload Engine SDK and Framework, this award-winning engine offers a versatile and accessible creative platform. Initially developed in 2014, the KZX Engine faced setbacks due to a project wipe. However, in 2020, the team resumed development, rebuilding the engine from scratch using the Overload Engine architecture from Overload Tech. As a freeware engine, the KZX Engine provides developers with unlimited creative possibilities. It utilizes C++ and OpenGL for core functionality and integrates Lua for scripting. Currently available exclusively on Windows, the engine's game editor supports export for Windows builds. Despite this limitation, the KZX Engine holds immense potential to become an industry standard with its powerful features, stunning visuals, and user-friendly interface.

Completely for Free

Yes, KZX Engine is completely for free the KZX Engine has no additional paid licenses or royalty fees for any commercialization of your product made with our software. Everything you make with our engine is for free for you to distribute, read our SLEULA (Software License & End User Agreement) for more information. visit our license.


With KZX Engine, you can easily use any texture file to make an PBR, Standard or empty material, our material system has multiple easy shader functions. The KZX Engine material pipeline was made similar to the popular unity game engine.

Lua Scripting

Believe it or not, you don't need many experience to make a script using Lua, you can follow many tutorials on youtube or you can ask for help in our discord community. Join the Community

Advanced Engine Editor

KZX Engine has a very clean and modular user interface within the engine editor. With the help of the Overload Engine we were able to use this User Interface. The KZX Editor was originally made for beginning developers to navigate more easier and to use the editor in a more professional enviroment. New Engine and features are added regularly to improve the KZX Engine.

Realistic Game Physics

This has been made with the help of the powerfull Bullet3 physics library, a awsome frontier of dynamic physics and kinematics. We modified a realistic physics functionality with just a few clicks you have fully dynamic physics and gravity on your physical objects!

Example Demo

KZX Engine provides you with free playable demo for you to discover, this demo was pre-builded but do contain a set of variety of open content to be adjusted to your likings and to learn from them. This demo has been fully created and rendered within the KZX Engine.

Sponza - Graphics Demo

Official Partners: