When comparing Source vs Torque3D, the Slant community recommends Torque3D for most people. In the question“What are the best 3D game engines?” Torque3D is ranked 25th while Source is ranked 29th. The most important reason people chose Torque3D is:
Torque3D is a free game engine licensed under MIT with source code available on [GitHub](https://github.com/GarageGames/Torque3D).
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Great documentation
Valve's official documentation website is great for newbies. It demonstrates the pros and cons of the engine (and since the website isn't maintained by Valve, but instead the community, the pros and cons are largely unbiased). There are also a number of pages dedicated to entities used within official Valve games and also community-made mods that were turned into full-fledged games by Valve. These pages explain the ins and outs of how most source programming works. There are also guides for Valve's tools which are both included in Source SDK and in any Valve-developed game.
Pro Runs on every potato pc
Since it has precalculated lighting, this engine is great for low end PCs too.
Pro Many basic entities
You don't need to code your own door or ladder etc. You can pretty much use every entity used in Half-Life 2 yourself easily.
Pro Visual logic, no programming
Of course you can program stuff into source but for level design only, source has a really easy input/output system for your level logic (e.g. doors, trigger when player walks into room...).
Pro Has a built-in video capture and editing application
Source includes Source Filmmaker, a video capture and editing application.
Pro Easy way to export or load source models to unity and maps
Pro Free and open source
Torque3D is a free game engine licensed under MIT with source code available on GitHub.
Pro Incredible Performance on low-end PCs
Even on low-end-PCs the Engine and its games run perfect.
Pro Many stock features for a FPS but flexible enough for other Genres
Pro Continually updated by a dedicated and skilled community
Pro Easy to implement 32 to 64 multi-player networking
Torque's approach to networking makes this one of the best performing and easiest to implement multiplayer game engines available.
Pro Redistributable tools
Cons
Con Only for mods
Normally, you can only use the Source Engine to develop "source-mods" (as Steam calls them), however the developer wiki is correct in saying Valve have a proven track-record for finding source-mods and turning them into fully-fledged games, Black Mesa Source is a good example of this, as it began life as a source-mod available for free, however Valve turned it into a fully-fledged and paid game.
Con SDK is outdated and difficult to use
Source SDK has not been updated in ages, and has instead been "re-released" under different names, e.g "Source SDK 2013 Singleplayer".
It's honestly easier to use the version of SDK included with any Source game, namely Portal 2 or DOTA 2, since both have a variant of Source SDK that is more updated than anything you can find in the tools section of Steam.
Con Aging
If you are planing on using some of the latest graphical options, pick another engine.
Con Weak AI
Movement AI is limited to moving in a straight line.
Con Limited platforms
Torque3D only publishes to desktop and mobile.