Also timezone is a major factor right now with the little ( but growing) amount of players the game has.
Also the amount of servers online are more than the total number of actual daily players, basically it's causing a saturation in the number of players per server, spreading the amount even thinner.
I'd imagine if there were only 5 servers we'd see more players on one of these servers regardless of timezone.
Then there's also a slight language barrier for multiplayer that is keeping some players a bit more offline.
Try translating in Russian, the game doesn't support their alphabetic characters so they log off.
Unless anybody here can point me to a translator that will translate Russian in western alphabet but still be accurate. ( Thanks in advance )