Some reference to the engine, such as the developer site or a wikipedia article.

Leadwerks Game Engine

https://www.ultraengine.com/community/blogs/blog/41-leadwerks-company-blog/

https://en.m.wikipedia.org/wiki/Leadwerks

SteamDB links

https://store.steampowered.com/app/1541690/Concealment/

Possible way to detect it

No response