Moddio is described as 'Multiplayer-First Game Engine. It has a built-in server-authoritative netcode, including snapshot interpolation and client-side reconciliation. It can support 50+ concurrent players or 300+ moving entities hosted on a $5/month VM' and is a game development tool in the development category. There are more than 50 alternatives to Moddio for a variety of platforms, including Windows, Linux, Mac, Android and iPhone apps. The best Moddio alternative is Godot Engine, which is both free and Open Source. Other great apps like Moddio are Unity, Unreal Engine, GDevelop and Wick Editor.