Game Builder is an experimental game-building sandbox. Create games within a 3D game world you create. Choose from thousands of ready-made 3D models through Poly. Design game logic by arranging various blocks in a sleek drag-and-drop interface.



Castle Game Engine is described as 'An open-source 3D/2D game engine for ObjectPascal' and is a game development tool in the development category. There are more than 50 alternatives to Castle Game Engine for a variety of platforms, including Windows, Linux, Mac, Android and iPhone apps. The best Castle Game Engine alternative is Godot Engine, which is both free and Open Source. Other great apps like Castle Game Engine are Unity, Unreal Engine, GDevelop and Candlestick.
Game Builder is an experimental game-building sandbox. Create games within a 3D game world you create. Choose from thousands of ready-made 3D models through Poly. Design game logic by arranging various blocks in a sleek drag-and-drop interface.



AresEd is a high-level and fully featured 3D game creation suite. It is Free and Open Source. When it is finished you will be able to make full 3D games without writing any code (although a fallback to the python scripting language will be provided).





GameCraft (formerly Robocraft X) is a game maker where you can build your own physics games from blocks and components without the need to write code. You can also play many games that have been created and shared by others in the community.




Cave Engine is a Simple, easy to use, 3D desktop Game Engine that is scriptable in Python.



Atavism opens up development opportunities of virtual online worlds to everyone regardless of programming knowledge or artistic ability.