“We are launching the first Global Lab server to help improve the stability of new updates on the live servers,” Kakao says. “Through the new server we will open game content in development earlier so that we can test them as well. Thus the Global Lab server will already have characters pre-created depending on the test purpose and some game money will be provided so that you can test the characters fully. The servers settings may also be changed so that you can gain items and raise your character faster. Similarly, the Global Lab server may be reset or the service may be suspended at any time in order to analyze the feedback as quickly as possible so that we can apply the feedback as much as we can into live service.”
The test environment does require a separate client download, and apparently it won’t work for EU players, in spite of the fact that Kakao is located in the EU. Expect a reset every two weeks.