- Ludibrium
Ludibrium, commonly referred as "Legoland", since the town is made out of Lego-type blocks, is a floating town that is supported by two monstrous 100 floor towers: Eos and Helios. It is suspended over Ludus Lake between two islands, where Omega Sector and Korean Folk Town are located. It is somewhat isolated from the rest of Ossyria island, though a trip underwater can get the player back. Ludibrium is accessed via a train-like ship at Orbis. The monsters here are mostly toy-themed and time-themed. It is also accessible from Korean Folk Town via its link to Aqua Road.
There are currently two main areas that players can hunt or train at. The first of these areas is Eos Tower, while the second is the Clock Tower.
- Eos Tower
This tower, unlike Orbis Tower, has 101 floors, its 101st floor being the area for the Ludibrium Party Quest. This advanced Party Quest is for players between the levels of 35 and 50. Further details are available at the page about party quests. Eos Tower is one of two supports that keeps Ludibrium afloat.
Eos Tower
Upon entrance, a player can accept the Dollhouse quest, which allows only one player on that specific channel to do the quest, similar to how a party quest functions. Players must find the 'special' dollhouse out of 10 similar-looking dollhouses. The time limit is 10 minutes.
On the lowest floor, the first floor, players may access Omega Sector. Return-to-town scrolls do not function inside the tower, and only Eos Rock Scrolls can be used for rapid transportation on certain floors. By doing the repeatable "Lost Soldier" quest, which can be found on the 93rd floor, a player can obtain 20 Eos Rock Scrolls each day.
- Clock Tower
The entrance to the Clock Tower is located in the middle of Ludibrium. On the first three levels, there is a Toy Factory, but the lower levels are generally concerned with time-themed maps and monsters (where one can find Chronos, Platoon Chronos, and Master Chronos). Each level has very long side branches, so one has to scout a bit to know where everything is.
Further down is known as the "Ludibrium Dungeon". It has the strongest monsters in most versions of the game, with the exceptions of Aqua Dungeon and Leafre. At the "Path of Time" map, there is an extremely long ladder. At the bottom, one can go two ways: to the left are monsters such as Soul Teddies, Death Teddies, Klocks, and Phantom Watches. After the Grim Phantom Watches, Thanatos, a level 108 monster, may be found. On the right, players may find monsters such as Buffies, Buffoons, Ghost Pirates, and Spirit Vikings. In the map past the Spirit Vikings, another level 108 monster, the Gatekeeper, is located. Once past Thanatos and Gatekeepers, there is a map devoid of any monsters. This is the bottom of the clock tower, where players are able to access Papulatus, one of the "Big Three" boss monsters.
In JapanMS, there is a special Party Quest for characters between the levels of 51 and 70, called the Ludibrium Maze Party Quest. It involves navigating a maze and collecting as many passes as possible for experience. There is no boss monster, but there are a few special Tauromaci from Sleepywood's Ant Tunnel that drop large numbers of passes. It is accessed in the main town on the exterior of the clock tower.
- Helios Tower
Helios Tower, just before Korean Folk Town
Helios tower is located in the east end of Ludibrium, mirroring the Eos Tower. The only monster is Retz, a hamster-looking monster resembling the Dirty Ratz in Eos Tower. Only four floors are accessible in this 100 floor tower. Fortunately for travelers, an elevator takes them from the 99th floor to the 2nd floor. The 1st floor holds a library where a giant magical book can be found, which can take players to Korean Folk Town. Helios Tower is the other support that keeps Ludibrium afloat.