There is also Unigine [1] but that has less community around it than Unreal. I am mentioning it because I think it should be known more. It was started by a single russian dev who was initially just writing online tutorials on various OpenGL and physics stuff (frustum.org). Then he decided to make a commercial engine and started a company. Of course their engine evolved a lot since and they have a team of devs now... - Source: Hacker News / 9 months ago

Give it a good once-over when it arrives for any shipping damage, check to make sure that memory overclocking in enabled in the BIOS since that's sometimes not done by the builder and then benchmark it with something simple like Unigine to make sure it's not running weirdly below the norms (4070Ti should be around 3100-3300 in Unigine Heaven) or you can download 3DMark Demo and it should give you a... Source: 12 months ago

But yeah, I was trying to push Unigine (double sized vector3 would be nice) as it seems to target more the industry type apps. Source: almost 2 years ago

Https://unigine.com/ is a powerful game engine that no one seems to pay any attention to. So, they mainly get their revenue from industrial applications. Source: about 2 years ago

So you consider an engine "professional" if your favourite big PC games run on it? What sort of logic is this? I suppose enterprise-geared engines like UEngine aren't "professional" either because they aren't popular with game developers? Source: almost 3 years ago

And, for completion, with the same engine that beyond all reason is done, but with a different game play feeling: https://zero-k.info/ I personally prefer Zero-K (flatter tech tree, territory can be more important), but both are great games. - Source: Hacker News / 2 months ago

I'll take this opportunity to recommend Zero-K[1] for those who were into Total Annihilation. It's truly excellent! [1]: https://zero-k.info/. - Source: Hacker News / 9 months ago

Zero-k (https://zero-k.info/) on the same engine supports custom maps. How would you feel about uploading / other people uploading the map? Source: 12 months ago

My current favorite is Beyond All Reason. Before BAR, my favorite was Zero-K. Both BAR and zk use the same game engine, SpringRTS. BAR and zk are very similar to one another, and they're successors for Total Annihilation and Supreme Commander. Source: about 1 year ago

Zero-K and Beyond All Reason have some kind of tower defense mode. Both are FOSS and run on the same engine (Spring). Source: over 1 year ago