List of Unity alternatives

This page summarizes the projects mentioned and recommended in the original post on /r/gamedev

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  • WickedEngine

    3D engine with modern graphics

  • Signup

    Information about signing up for a free Epic Games account, and getting access to UnrealEngine source code.

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  • stride-website

    This repository hosts the source code for the official Stride 3D engine website. Contributors can follow the build instructions provided to run the website locally.

  • cocos-engine

    Cocos simplifies game creation and distribution with Cocos Creator, a free, open-source, cross-platform game engine. Empowering millions of developers to create high-performance, engaging 2D/3D games and instant web entertainment.

  • engine

    Fast and lightweight JavaScript game engine built on WebGL and glTF

  • o3de

    Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D engine that enables developers and content creators to build AAA games, cinema-quality 3D worlds, and high-fidelity simulations without any fees or commercial obligations.

  • heaps

    Heaps : Haxe Game Framework

  • WorkOS

    The modern API for authentication & user identity. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

  • Godot

    Godot Engine – Multi-platform 2D and 3D game engine

  • Fyrox

    3D and 2D game engine written in Rust

  • FlaxEngine

    Flax Engine – multi-platform 3D game engine

  • bevy

    A refreshingly simple data-driven game engine built in Rust

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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