Leadwerks is described as 'Game Engine provides the smoothest learning curve to take you from beginner to full-fledged game developer. Use the visual editor and the flowgraph system to set up game interactions without code. Use Lua to write your own game scripts' and is a Game Development Tool in the Development category. There are more than 50 alternatives to Leadwerks for a variety of platforms, including Windows, Linux, Mac, iPhone and Online / Web-based. The best alternative is Godot Engine, which is both free and Open Source. Other great apps like Leadwerks are Unity (Freemium), Unreal Engine (Freemium), Wick Editor (Free, Open Source) and CRYENGINE (Free Personal).
Godot Engine is a feature-packed, cross-platform game engine to create 2D and 3D games from a unified interface. It provides a comprehensive set of common tools, so that users can focus on making games without having to reinvent the wheel.
Unreal Engine is a professional suite of tools and technologies used for building high-quality games across a range of platforms. Unreal Engine’s rendering architecture enables developers to achieve stunning visuals and also scale elegantly to lower-end systems.
The Wick Editor is a free and open-source tool for creating games, animations, and everything in-between. It's designed to be the most accessible tool for creating multimedia projects on the web. Your creations can run on any device with a web browser - that means mobile too.
Stride (formerly Xenko) is an open-source C# game engine designed for the future of gaming. It comes with a full toolchain and is especially well suited to create realistic games but allows you much more!.