Don't worry. The game will be global, and those in Greece will be able to play as well. Though I must ask if Korea will be IP-banned, considering they have Scarlet Blade (Queen's Blade) in their country. I'm pretty sure it's not, but due to the discussions and arguments in the forums for another Aeria game about other countries having the same game, and people from those countries playing on the EN version and "causing the most lag", I just want to get that cleared up.
Dynasty Warriors Online (retired): Chronos.JX1; Chariot General | Aura Kingdom: Chronos_Notashi; Ravager/Grenadier; Chimera server | Dragomon Hunter: ChronosNotashi; Mercenary>Vanguard