IsmailDaGamer

How comes other people are millionaires but so many aren’t?

That’s an irrelevant analogy, I’m simply wondering if it’s impossible to freeze the currencies? Or make the game give you many coins after a level like the patched happy clinic hack.

Your initial question was, why is XY hackable but not YZ.
With the analogy I have chosen, it would be the same answer: There can be multiple reasons, none, or you can't know if someone is a millionaire (if something is hackable).
On top you assumed, it's not hackable, just based on if a mod is available rn.

So who knows if something is hackable, if no one searched that deep?
Why could one server sided game be hackable and another not? Pretty simple, the more stuff is server sided, the less options you have to modify anything. So one game could have 50% server sided and another 100%.
 

I only mentioned the other games because they’re all by the same developer and use the same engine, airplane chefs is the odd one out as it still hasn’t been able to be hacked in a way. I’m not comparing to other server sided games.

@IsmailDaGamer I tried to hack the energy in Murder in the Alps, and that game is server sided. So energy can't be hacked. The game reloads itself once you've modified the value of it.