ezEngine is a free, open source game engine written in C++. Its philosophy is to be modular and flexible, such that it can be adapted to many different use cases. EZ utilizes a plugin system to integrate features such as FMOD or Jolt Physics.

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.
ezEngine is a free, open source game engine written in C++. Its philosophy is to be modular and flexible, such that it can be adapted to many different use cases. EZ utilizes a plugin system to integrate features such as FMOD or Jolt Physics.

Flax Engine is claimed the most agile game engine. It's open source, cross-platform and it lets you write scripts in C++ and C# seamlessly. Also focused on lightweight development. A true game changer.




Write JavaScript 2D and 3D games, compile to native. Create, play, and publish from your terminal.
A free software game engine focusing on developing games faster, more modular and stable with true -1 day portability support.
![Drag[en]gine screenshot 1](https://img.alternativeto.net/s/309x197/jpeg/drag-en-gine_786666_full.webp)
![Drag[en]gine screenshot 1](https://img.alternativeto.net/s/309x197/jpeg/drag-en-gine_787840_full.png)
![Drag[en]gine screenshot 2](https://img.alternativeto.net/s/309x197/jpeg/drag-en-gine_443640_full.jpg)
LunarEngine (formerly Librebox) is an open-source game engine powered by Luau. It delivers a sandbox-style API and development model inspired by popular sandbox engines, so existing Luau code runs with minimal changes.

JMonkeyEngine3 it’s a free, open source game engine, made especially for Java game developers who want to create 3D games using modern technology. The software is programmed entirely in Java, intended for wide accessibility and quick deployment.

A game engine written in Python, extending support across multiple GPU devices with 3D rendering, PBR Renderer and much more.






The G3D Innovation Engine is a commercial-grade C++ 3D engine available as Open Source (BSD License). It is used in commercial games, research papers, military simulators, and university courses. G3D supports hardware accelerated real-time rendering, off-line rendering like ray...




Cocos Creator is a complete package of game development tools and workflow, including a game engine (based on Cocos2d-x), resource management, scene editing, game preview, debug and publish one project to multiple platforms.


batari Basic (bB) is a BASIC-like language for creating Atari 2600 games. It creates a binary file that can be run on an Atari 2600 emulator or the binary file may be used to make a cartridge that will operate on a real Atari 2600.
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).
