Evochron Mercenary, false positive for Godot

Locate the Godot detection rule that matches an .exe and same-basename .pck, then inspect how release dates could be used as an additional signal. Verify the rule against the Evochron Mercenary depot and check that legitimate Godot 3.0+ games still match. The payload names no source file or test, so the relevant rule and validation method must first be found in the repository.

SteamDB link to the game

https://steamdb.info/app/71000/

What is it being detected as and what should it be detected as? Any other information?

Detected as Godot, but it doesn't seem to be.
Don't know what's the actual engine, might be in house.

Additional information

Windows depot: https://steamdb.info/depot/71001/

It matches the Godot rules as it has .exe and .pck with the same basename, which is indeed the main signature of Godot 3.0+ games:

EvochronMercenary.exe
EvochronMercenary.pck

But Evochron Mercenary was released in 2012, so 2 years before Godot's first open source release, and most importantly 6 years before Godot 3.0 which uses the ".pck with same basename as .exe" logic (previous releases required a main .pck named data.pck).

There's also a ton of other files which are not relevant for Godot, such as DirectX installer and MSVC redistributable DLLs. It's hard to say 100% that this could never match a Godot game as with a custom build and a custom-developed DirectX renderer one could get a distribution like this if one wanted to... but it's extremely unlikely.

If one can access the release date, the Godot rule could exclude games released before February 2014 (or possibly a few months later if needed - the first game released on Steam might be the Dog Mendonça demo: https://steamdb.info/app/330800/).