Yes, Party is play a important role in games, even in MapleStory, and now here is some infor about parties, enjoy it
The Ludibrium party quest consists of a party with 6 members. These parties have to be with members levels 35-50 (MapleStory Powerleveling). The party must be in the same room for the leader to click the npc that takes you in pq.
You can join a party by finding people who say "looking for pq members" and asking them to invite you. Also by you saying "looking for pq", eventually you will get invited to a party.
If you are leader to enter the Ludibrium Party quest, have a party of 6 and have them all be Eos Tower floor 101. Make sure they are all lvl 35-50. then wait for your track to get to "A crack in the wall" here you need to be ready. As soon as that party reaches Bonus,double click the red sign in eos 101 and move the window so the ok button is on top of the sign. then click in that spot alot.
Anyway i hope this simple description could help you some. And if you dont have enough time to earn MapleStory gold for your character, you could buy it from Mmooffers, it is a reliable website. Just have a try now ! Best regards !