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.




MonoGame is described as 'One framework for creating powerful cross-platform games. The spiritual successor to XNA with 1000's of titles shipped across desktop, mobile, and console platforms. MonoGame is a fully managed .NET open source game framework without any black boxes' and is a game development tool in the development category. There are more than 100 alternatives to MonoGame for a variety of platforms, including Windows, Mac, Linux, iPhone and Android apps. The best MonoGame alternative is Godot Engine, which is both free and Open Source. Other great apps like MonoGame are Unity, Unreal Engine, GDevelop and Candlestick.
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.




Multimedia JavaScript framework to create real cross-platform and hybrid game engines, games, emulators, multimedia libraries and apps.




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.

[Multimedia Fusion 2 has been replaced by Clickteam Fusion 2.5.]
Game and software creation has never been easier or quicker than with Clickteam Fusion 2.5!
With Fusion 2.5’s amazing event editor system you are able to quickly generate games or apps.
Within your first hour you.




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)
Java framework providing unified API for building 2D or 3D games across desktop, mobile, and browser platforms, with hot code swapping, rapid prototyping, modular architecture, integrated physics, input, asset tools, and support for desktop-native debugging.
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.

Cerberus X is a cross-platform, easy to learn object-oriented programming language focusing on game development with a powerful set of APIs that make it easy to draw lightning fast graphics on all supported platforms To achieve this, Cerberus X translate our code to the target...



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.

Duality is a modular 2D game engine / editor combo, written entirely in C# and built on top of an OpenGL backend. It's open source, features an open architecture that invites extensibility and technical ownership, and it embraces C# as a language rather than a scripting...




Amethyst uses gfx-rs to render graphics with Vulkan or Metal. It is meant to be used for 2D and 3D, with various utilities for both types of games. It should be beginner friendly but also allow more advanced uses such as custom render passes and GLSL shaders.