Phaser is described as 'fun, free and fast 2D game framework for making HTML5 games for desktop and mobile web browsers, supporting Canvas and WebGL rendering' and is an app in the Development category. There are more than 50 alternatives to Phaser for a variety of platforms, including Windows, Mac, Linux, iPhone and Android. The best alternative is Godot Engine, which is both free and Open Source. Other great apps like Phaser are Unity (Freemium), GDevelop (Free Personal, Open Source), LÖVE (Free, Open Source) and Wick Editor (Free, Open Source).
A game-engine fully integrated in Blender UPBGE is an open-source, 3D game engine forked from the old Blender Game Engine and deployed with Blender itself. This unified workflow is its main strength, as you can make your game from start to finish without leaving Blender.
RCBasic is a free and open source dialect of the BASIC programming language. It is intended to be a simple and powerful language for developing games and multimedia software with many built-in functions to aid in game and multimedia application development.
SpriteKit is a general-purpose framework for drawing shapes, particles, text, images, and video in two dimensions. It leverages Metal to achieve high-performance battery-efficient rendering and 2d games and other graphics-intensive apps.
NasNas is a lightweight modular 2D game framework with a focus on pixel art style games. It is entirely written in modern C++17, and doesn't have any dependency other than SFML2. It provides a clean and easy to use API.
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.
GameplayKit is an object-oriented framework that provides foundational tools and technologies for building games in iOS, macOS, and tvOS using the Swift programming language and 3rd party rendering and multimedia libraries such as SpriteKit.
Moai SDK is an embeddable cross-platform game development SDK written in C++ and scriptable in Lua. You can use Moai to write games or apps, or you can embed Moai in other programs. You can also use Moai as an overlay in your apps.