microStudio is described as 'free game engine online. Create games, learn programming, play, share, prototype and jam!' and is a Game Development Tool in the Development category. There are more than 100 alternatives to microStudio for a variety of platforms, including Windows, Mac, Linux, iPhone and Online / Web-based. The best alternative is Godot Engine, which is both free and Open Source. Other great apps like microStudio are Unity (Freemium), Unreal Engine (Freemium), Android Studio (Free, Open Source) and GDevelop (Free, Open Source).
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.
Android Studio is the official integrated development environment (IDE) for Google's Android operating system, built on JetBrains' IntelliJ IDEA software and designed specifically for Android development.
GDevelop is an open-source game making software designed to be used by everyone. Any kind of 2D games can be created with it and no programming skills are required to get started. Logic of games are made using visual events.
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.