I think now it has 15 reserves/map and 3 of them are from the US alone. All the others are in different countries. I wish they had an Indian one but the developers say, since Hunting is banned in India, they may not be coming up with a DLC map on India so they don't promote hunting where it is not allowed.
The last two maps, Austalia and Nepal were really good. But you have to buy these DLC maps (if you want to play in singleplayer, which is much more calming and you have more control over time and placing camps etc), that's how they make their money and they keep making more maps. That's how they been running successfully since 2017.
That's so cool. It says how active the developers are and how careful they're.