Apps similar to GameplayKit include Godot Engine, which is free and open source. Other options are Unity, LÖVE, microStudio and Bevy Game Engine. There's no shortage of Game Development Tools like GameplayKit, with more than 25 alternatives for Windows, Linux, Mac, Android and iPhone.
Oxygine is completely free and open source (MIT license) 2D game engine, available on GitHub. It is written in C++ and runs on MacOSX, iOS, Android, Windows and Linux.
Russia
PlayBasic is a game programming language that gives new programmers the flexibility and feature set for rapid game development, without the complexity or cost. So everybody can experience the challenge of game programming again!
Australia
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.
Solar2D is a Lua based cross-platform framework with focus on ease of iterations and usage. ideal for rapidly creating apps and games for mobile devices and desktop systems.
Russia
BlitzMax is a strongly-typed, garbage-collected, open-source, cross-platform programming language with built-in support for advanced 2D graphics, sound, unicode and is ideally suited to making all kinds of apps and games.
New Zealand
Germany
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