Join the Private Test Server (PTS)!

No, they would not go to all this trouble for non gamebreaking bugs.

The mention of an NDA leads me to hope that this time they won't let in thousands of random players, but rather hand-pick people who are most likely to actually try to find bugs and report them to Nexon (rather than figure out a way to abuse them on the live servers).
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Problem is i see how most people just wanna use to test stuff earlyer, i saw some ppl in the facebook Brazilian group how he want to test Cadena once it come out , first thing ppl need test if reboot can create zeros there for sure.