I was wondering if it was allowed to use a chrome extension which includes

• A counter for the mean time spent on each question

• A better cursor label for more readability

• No country labels and flashes when you click

• Better borders

I wouldn't know but some of these are in an extinction that is allowed. GitHub - sinskiy/seterraextra: Dark mode, no label and more cool features for Seterra

I'm not sure about the first three but physically changing the map borders probably won't be allowed since it could give a potential advantage (even if small).