Urho3D
Urho3D is a lightweight, cross-platform rendering and game engine implemented in C++ and released…
18 Alternatives To Urho3D
Adventure Game Studio
Adventure Game Studio provides the tools to make your own adventure, for free!
Armory3D
Armory 3D is a free and open source game development software developed using Haxe and Kha and made to run inside Blender.
Babylon
A doctor on your phone
Blender
Blender is the open source, cross platform suite of tools for 3D creation.
Corona SDK
Cross-platform mobile app development.
CryENGINE
The most powerful game development platform is now available to everyone. Full engine source code.
GDevelop
GDevelop is an open-source game making software designed to be used by everyone.
GameMaker
“With GameMaker, I went from no programming knowledge to full-time developer in 2 years!” Seth Coster - Butterscotch Shenanigans - Crashlands. “GMS 2 is absolutely amazing and I cannot get over how great this software is to use”.
MonoGame
MonoGame is an open source implementation of the Microsoft XNA 4 Framework.
Orx
Orx - a portable open source game engine
Polycode
Polycode is a C++ and Lua framework for building interactive applications.
RPG Maker
Make your own PC game with RPG Maker. Our easy to use tools are simple enough for a child, and powerful enough for a developer. Try it free today!
Tombstone Engine
A direct successor to the C4 engine.
Torque 3D
Torque 3D is a easy-to-use game creation platform.
Unity
The multiplatform game creation tools for everyone.
Unreal Engine
Unreal Engine 4 is a suite of integrated tools for game developers to design and build games, simulations, and visualizations.
Wick Editor
The Internet’s free and open-source creation toolkit.
irrlicht
This caused the Irrlicht homepage and forum to work badly. Over the last days most things started working again – except the forum continues to be broken. Old posts can be read but everything else is currently not working.