Unity is described as 'Real-time 3D engine enabling collaboration to create immersive, interactive experiences on Windows, Mac, and Linux, with extensive platform support' and is a very popular game development tool in the development category. There are more than 100 alternatives to Unity for a variety of platforms, including Windows, Linux, Mac, Web-based and iPhone apps. The best Unity alternative is Godot Engine, which is both free and Open Source. Other great apps like Unity are Unreal Engine, Stride Game Engine, GDevelop and CRYENGINE.
CopperCube is a 3D editor for creating interactive 3D applications or simple games for Flash / Stage 3D, WebGL or as application. No programming is necessary for this. Simply import your 3D models, specify camera controllers and behaviors, and hit 'publish'.
AppGameKit is a simple cross platform game development tool that runs on Windows, Linux, MacOS and Raspberry Pi. A version to run on Android and iOS is also available. With AppGameKit you can use a simple Basic like programming language to develop cross platform applications, 2D...
GameSalad Creator is an authoring tool developed by GameSalad, Inc. (formerly Gendai Games) aimed primarily at non-programmers for composing games in a drag-and-drop fashion, utilizing visual editors and a behavior-based logic system.
Project Anarchy is a complete end to end game engine and state-of-the-art toolset for mobile. Project Anarchy includes an entirely free license to ship your game on iOS, Android and Tizen platforms.
Lumix Engine is an open-source 3D game design software and engine. It's written in C++ and supports several scripting languages.
Hypatia is a game engine for single player 2D action adventure games. You can use it to make a game like Legend of Zelda: Oracle of Ages and Oracle of Seasons. Hypatia is aimed at non-programmers and programmers alike.
Moddio is a 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.
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.
Visionaire Studio is the top reference for the development of adventure games.
DX Studio combines the latest in real time 3D graphics technology from industry and gaming with rapid application development tools in a powerful 3d engine.
PlayN is a cross-platform game library that allows you to create a single Java codebase that runs in HTML5, Java, Android and Flash.
Your project’s smart 3D digital twin as a Service. SmartShape (formerly Minko) is a technology to develop and design rich, interactive and universal 3D applications targeting computers, web browsers and mobile platforms.
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