Hello everyone! I wanted to share my personal experience of hacking this game. In fact, it is not difficult, and everything that is needed has already been described above, in addition, the developer is quite weak as a developer, plus the project looks quite dead, so everything still works and is unlikely to ever stop working.
I will describe what needs to be done, because I am not sure that it is allowed to post links here, but if you do not succeed, you can DM me for the finished file.
First, you need the 7zip asar plugin, it is easy to find on Google. After this, app.asar, which stores all the logic of the game, can be opened as a regular archive, but it is better for convenience to extract the file app.asar\web-mobile\assets\main\index.js
in this file you need to find cashPerMinute*h/10 and change it to cashPerMinute*h*10000, this is more than enough to get a lot of money for offline, if you do not enter the game for about 10 minutes, and immediately with a large, but not abnormal amount of credits change the city.
At the same time, after the change, the game will stop starting, for this you also need to remove the check in the file app.asar\dist\main.js, now literally it looks like if (_0x27fbf6==_0x25ad1e)throw new Error (_0xdef86c (0xf4)), but you just need to find !=, there are only three matches, and one of them clearly says that this is what you need. You are beautiful!

You can also play with the staticInput:{} and staticOutput:{} construction of different buildings, but do not try to change the input of all buildings to empty, this will lead to nan credits. Unfortunately, I could not figure out the tedious logic of the developer, for example, in market prices or upgrades, if you can do it, it will be cool. I multiplied all production by 20 times, but at the same time the prices of the local market became tiny, and I remove the game's internet access when I use a modified file, and turn on the internet with the original file when I've done what I wanted in the game. It is also easy to change the energy consumption of all productions or even change it to a plus, but it seems to me that offline earnings are enough.
Thank you for your attention!