Apps similar to Godot Engine include Unity, which has a free version. Other options are Unreal Engine, GDevelop, Wick Editor and LÖVE. You're spoiled for choice with Game Development Tools like Godot Engine: we list more than 100 alternatives for Windows, Linux, Mac, Android and iPhone.
Adventure Game Studio (AGS) - is the IDE and the engine meant for creating and running videogames of adventure (aka "quest") genre. It has potential, although limited, support for other genres as well.
United Kingdom
JoiPlay is a game launcher for Ren'Py, RPG Maker XP/VX/VX Ace/MV/MZ, TyranoBuilder and HTML5 based games
Leadwerks 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.
United States
Allegro 4 and Allegro 5 are cross-platform, libraries mainly aimed at video game and multimedia programming. They handle common, low-level tasks such as creating windows, accepting user input, loading data, drawing images, playing sounds, etc.
Germany
EU
3D game engine that uses web technologies. Perfect for those who already know TypeScript and want to collaborate with designers and artists to create 3D experiences.
SwedenEU
EasyRPG is a project aimed at producing a free and open source role playing game interpreter and editor compatible with RPG Maker 2000 and 2003.
Pygame is a set of Python modules designed for writing video games. Pygame adds functionality on top of the excellent SDL library. This allows you to create fully featured games and multimedia programs in the python language.
HARFANG®3D is a cross-platform & multi-language solution to integrate with embedded systems, existing environments & combining features to meet the industrial standards of 3D imaging.
FranceEU
Nau Engine is a versatile and free game engine built on open-source principles. It's designed to be accessible to developers of all skill levels, enabling the creation of a wide range of interactive experiences.
United States
Amethyst uses gfx-rs to render graphics with Vulkan or Metal. It is meant to be used for 2D and 3D, with various utilities for both types of games. It should be beginner friendly but also allow more advanced uses such as custom render passes and GLSL shaders.
