Project Spark has been discontinued. Similar apps include Godot Engine, which is free and open source. Other options are Unity, Unreal Engine, Wick Editor and microStudio. Game Development Tools like Project Spark are a crowded field, with more than 25 alternatives for Windows, Linux, Mac, the web and self-hosting.
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.
Estonia
EU
Valkyrie is a no-code creative platform that lets designers combine digital assets and create applications and interactive prototypes: where the power of Unity meets the usability of Photoshop.
United Kingdom
Reality Factory 2 is a next-generation game authoring suite. It combines a flexible, fully scripted game development environment powered by Python with the Ogre3D engine, and supports all major desktop operating systems.
The only true complete development platform for online games. HeroEngine seamlessly integrates the entire client and server architecture required to operate an online game directly into the development process.
United Kingdom
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.
