Cost / License
- Free
- Proprietary
Platforms
- Online

Apps similar to Flax Engine include Godot Engine, which is free and open source. Other options are Unity, Unreal Engine, GDevelop and Scratch. There's no shortage of Game Development Tools like Flax Engine, with more than 100 alternatives for Windows, Mac, Linux, the web and iPhone.

Verus Engine is a modern, platform-agnostic 3D game engine. It is developed using C++ and HLSL. It is based on Direct3D 12 and Vulkan graphics APIs. The code is user friendly and well optimized.



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Novashell is a high-level 2D game maker that tries to handle all the hard work behind the scenes allowing you to whip up sweet games using path finding, dialog, persistent dynamically sized maps with construction/deconstruction, save anywhere, and especially features that...



Orx is an open source, portable, lightweight, plugin-based, data-driven and extremely easy to use 2D-oriented game engine. Orx is mostly written in C, but allows you to develop with it with any language that can interface to C.




MAGE stands for MAKE A GAME EXPERIENCE
The goal for MAGE is to make it as easy as possible for people to create their own 3D universes, adventures and stories. PLAY WHILE YOU CREATE!.




DragonRuby Game Toolkit is a professional grade 2D game engine. It's tiny (~3.5MB), fast, and cross-platform (including consoles and mobile).