Apps similar to Blitz3D include Godot Engine, which is free and open source. Other options are Unity, Unreal Engine, GDevelop and microStudio. Game Development Tools like Blitz3D are a crowded field, with more than 50 alternatives for Windows, Linux, Mac, Android and iPhone.
Monkey 2 is a cross platform programming language aiming at game development. Write your code once in an easy to use language called the Monkey code and publish to multiple platforms. The Monkey code compile to native code best for each platform such as Java and JavaScript so...
New Zealand
Project Spark is a powerful, yet simple way to build and play your own worlds, stories and games.
United States
Limon is a multi platform 3D game engine mainly focusing on first person games. Focus of its development is ease of use and ease of study. It has builtin editor for maps, animations and GUIs.
PlayBasic is a game programming language that gives new programmers the flexibility and feature set for rapid game development, without the complexity or cost. So everybody can experience the challenge of game programming again!
Australia
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).
Netherlands
EU
BlitzMax is a strongly-typed, garbage-collected, open-source, cross-platform programming language with built-in support for advanced 2D graphics, sound, unicode and is ideally suited to making all kinds of apps and games.
SceneKit is a high-level 3D graphics framework that helps you create animated 3D content, scenes and effects in your app and games. Combines a high-performance rendering engine with a descriptive API for import, manipulation, and rendering of 3D assets also incorporates a...
United States
Cave Engine is a Simple, easy to use, 3D desktop Game Engine that is scriptable in Python.
Brazil
RCBasic is a free and open source dialect of the BASIC programming language. It is intended to be a simple and powerful language for developing games and multimedia software with many built-in functions to aid in game and multimedia application development.
GameplayKit is an object-oriented framework that provides foundational tools and technologies for building games in iOS, macOS, and tvOS using the Swift programming language and 3rd party rendering and multimedia libraries such as SpriteKit.
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