Alternative Game Engines for Marooned Unity Developers

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

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  • Phaser

    Discontinued Phaser is a fun, free and fast 2D game framework for making HTML5 games for desktop and mobile web browsers, supporting Canvas and WebGL rendering. [Moved to:] (by photonstorm)

    Phaser: I've actually used this engine before! It's pretty decent if you're just making small browser games and really easy to use. I taught a programming class to kids aged 10-15 and we used this for a couple of projects. They had no problem making some decent games with it. MIT Licensed and would definitely recommend giving it a go if you want to make something that has the same sort of style as older browser flash games we all used to play on Miniclip and other similar sites.

  • GamePlay

    Open-source, cross-platform, C++ game engine for creating 2D/3D games.

    Gameplay: Another promising MIT licensed engine for both 2D and 3D. Doesn't seem like there is much in the way of learning material though.

  • InfluxDB

    Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  • Panda3D

    Powerful, mature open-source cross-platform game engine for Python and C++, developed by Disney and CMU

    Panda3D: Let's you make games with c++ and python. I don't think there is an "editor" or anything like that with this engine, but it does look like there have been some decent games made with it. Could be good for smaller games. Modified BSD License.

  • Torque3D

    MIT Licensed Open Source version of Torque 3D from GarageGames

    Torque 2D/3D: Didn't do too much digging around on this one, but both versions are MIT licensed like Godot, but it seems like the project is a little more mature, with built-in multiplayer support. Could be worth looking into as an alternative to Godot if you really want something with MIT licensing.

  • Spring RTS game engine

    A powerful free cross-platform RTS game engine. - Report issues at (by spring)

    springrts: Designed for 3D rts games. May be worth looking into if that's what you're making. The site is kind of lack luster so I didn't do too much digging around.

  • 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.

    03DE: Open source game engine, under Apache License 2.0, developed by Amazon and the linux foundation. Seems to work under a modular package called "gems", that you can use to pull in the functionality you need. It uses c++ as it's main language, but you can use Lua, python or visual scripting for scripting stuff. Has multiplayer built into the engine and what they call a "robust" system for open-world games. There seems to be a lot of tutorials on the site, but they aren't laid out great.

  • FlaxEngine

    Flax Engine – multi-platform 3D game engine

    Flax Engine: C# and C++, Global Illumination system, Visual scripting, Full Source Code Available, 4% royalties after $250,000 (threshold is per quarter, not all time). The engine honestly looks really good, so it could be worth taking a closer look, but does lack tutorials.

  • WorkOS

    The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

  • Fyrox

    3D and 2D game engine written 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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