Abbreviation for Nameless Ragnarok Online, a private server branched from Ragnarok Online. nlRO is a game where everyone bows down to a champ named Halloween (aka Zach). Halloween is the single most awesome player ever play nlRO.
No, I'm only kidding. To find out more information, please visit www.forum.nlro.net.
"nlRO ish teh ubernist pwnge to ex1st."