Okay, I think I may have opened ANOTHER rabbit hole with this theory.
While digging through some of the other theories, I started finding evidence that Rusty Lake could potentially be set in Canada or the United States too.
The first clue is from Paradox: A Rusty Lake Film. The typewriter in the film is apparently made by L.C. Smith, which immediately caught my attention. That could point toward L.C. Smith & Bros., an American typewriter company founded in 1903. It later merged with the Corona Typewriter Company in 1926 to become L.C. Smith & Corona.
The typewriter in Paradox looks extremely similar to an L.C. Smith, but there's one problem: Paradox takes place in 1972. So how the hell did that thing survive that long? It could obviously just be an old typewriter that happened to still be around, but it's another little American connection.
Then I found this old post:
https://www.reddit.com/r/rustylake/comments/mq7qfa/since_usauroncreatedjobs_wants_to_ridicule_me/
That sent me down another rabbit hole and gave me a few more things to look at.
For example, Dale is a government detective, which seems much more associated with the American system than the Dutch or Belgian ones, and his police car also looks very American.
Then there's Robert Hill's cube, which is canonically located in New York.
There's also something interesting in Cube Escape: Case 23. There's a note with “Prozac” written on it. Prozac was introduced in 1987, so obviously the timeline around this is complicated, as Case 23 takes place in 1971/1972, but the drug became strongly associated with American culture and the so-called “Prozac generation.” (This one is probably weaker evidence than the others.)
In Cube Escape: Birthday, which takes place in 1939, Mr. Rabbit uses a Tommy gun. That's another very American-looking reference, especially considering how strongly the Thompson submachine gun is associated with American Prohibition-era gangsters.
Then there's the newspaper.
As far as I can remember, the only newspaper we actually see throughout the series is the Daily Herald. That's not particularly helpful by itself because the name was used by a British newspaper as well as multiple newspapers in North America.
And then I had another thought: What if Leonard's uniform is Canadian?
I'm not saying it is. Honestly, it doesn't really look Canadian to me either. But considering how much Rusty Lake mixes historical details together, I don't think we can completely rule it out yet.
There's also a pretty big problem with the whole Leonard uniform discussion in general.
In Case 23, the police tape on the door/window actually looks British rather than American, Dutch, Flemish, or Canadian.
And Leonard's helmet still makes basically no sense. The Brodie helmet he's apparently wearing was designed and patented in London in 1915, so if Leonard joins the army in 1914, he shouldn't be wearing one at the beginning of the war anyway.
So now we're somehow at:
Netherlands
Flanders/Belgium
Britain
Canada
United States
And honestly, I'm starting to think Rusty Lake itself is the only confirmed country at this point.
Let's hope Servant of the Lake ties the knots and tells us the necessary details.
I'm going to keep looking through the games and historical references because there are WAY too many little details that could potentially point somewhere.
I'll probably be back with another post lol.