For now, the website is translated in 4 languages. This is perhaps not mean it will be the case for the game, but this may be an indication (i guess)
There are unavoidable languages (
like English, Spanish, French and German), and others that seem very interesting in terms of numbers of speakers (such as
Arabic, Hindi, Portuguese, or Russian)
But the Mandarin (Simplified
Chinese) is another level. it is the most spoken language in the world (before English) with 1350 millions speakers against 1200 millions for the English. This is a huge market.
To frontier :
I would say that if it is complicated to translate the game into many languages (for financial reasons), does not hesitate to use the community. Some games offer different languages including, but provide the opportunity to translate the game into another language (adding the word (BETA) for example, after the language to specify that it is a translation made by the community, and that it is perhaps not complete).
This is the best way to reduce costs on some "exotic" languages, to be open to other markets, and in addition, the community is happy. Win/Win/Win.
Just give us a tool to do it, and within months, large number of languages will be supported, I guarantee.
for exemple, Minecraft is available in 62 languages with the "Languages Pack". With this technique the game is also available (and it's not a joke) in "Klingon" (Alien language from StarTrek) or "Quenya" (Elvish language from tolkien world)