Godot
Godot, short for Godot Engine, was created in 2007 by Juan Linietsky and Ariel Manzur. Godot is an open-source, cross-platform game engine designed for creating 2D and 3D games, simulations, and interactive applications. It is used across desktops, mobile devices, web platforms, and embedded systems.
Unity
Unity, short for Unity Engine, is a cross-platform game development framework and real-time 3D engine used to create interactive experiences, simulations, and games for desktop, mobile, console, and VR/AR platforms. Developers use Unity to build visually rich applications with physics, animation, scripting, and multimedia integration. To start using Unity, you can download the official installer from https://unity.com/download for personal or business development.