I asked on EUKO forum:
How do we know this is not a private server?
You have any way to prove it is a REAL ko client supported by Mgame and not just a private server?
also why don't we see no advertisment for EUKO if it is real?
TIPBOX / forum admind answered:
Thank you for your concerns
Her is some articles and advertisements.
This following korean article is about the license between Mgame and Game Cafe Services (DBA: enTiTy Game, NTTGame.com) in Korean
엠게임 나이트 온라인, 유럽 30개국 수출 - 온라인게임 전문 웹진 큐머드
The following are advertisement in European countires
Free MMORPG List - Free MMORPG Online - mmorpg games - Free To Play Games
F2P Games - Knight Online has announced the start of its european closed beta
Jeux MMO Gratuit - Jeux Web Fantaisie
Gratis MMO - Kostenlose Spiele - Browsergames
Giochi MMO - Knight Online: annunciata la data per la closed beta europea
Best free MMORPG & free MMO games list!
Thank you for your support
-Knight Online Team