MapleStory/Monsters

There are many monsters in the world of MapleStory. The most dangerous monsters live deep in dungeons. Harmless monsters tend to stay by towns. Maple Island is one of the places that has very few monsters and are mostly very weak. Higher level monsters live in Victoria Island, but more dangerous monsters live closer to the center (Dungeon) of the island. Ossyria mainly has high level monsters as well as three major bosses.

There is also a complete list of monsters and bosses.

Items, leftovers, and Mesos
After killing a monster, Mesos or monster leftovers (ETC. items) may be dropped sometimes. However, the monster may also drop something rare (infrequently of course), such as an equipment, which can be worth a lot. The mesos dropped by a monster is varied, and the range varies with the monster (and is usually, but not always, somewhat proportional to the level of the monster, so you will find that in SOME circumstances monsters of same level drops the same range of mesos), the maximum value usually being 1.5x the minimum value.

KoreaMS

 * Monsters Release Date: January 10, 2007 (GMT+8)
 * KoreaMS Tespia Version 1.2.74

JapanMS
JapanMS has released all Floating Market-related maps and monsters.
 * Monsters Release Date: February 28, 2007
 * JapanMS Version 1.24

ChinaMS
ChinaMS has released all Thai Floating Market-related maps and monsters.
 * March 5, 2007
 * ChinaMS version .50

TaiwanMS
TaiwanMS has released most Zipangu/Jipang monsters, as well as Orbis PQ-related monsters. Found at the end of the third party quest located in Orbis.
 * Monsters Release Date: January 3, 2007
 * TaiwanMS Version 0.43
 * Mushroom Shrine
 * Showa Town
 * Summons
 * Orbis PQ
 * Summons

ThailandMS
ThailandMS received the PVP (player versus Player) system, as well as the book monster event.
 * Monsters Release Date: March 14, 2007 (Preview)
 * ThailandMS Version 0.29

MapleSEA
MapleSEA released all Shanghai Waitan monsters.
 * Monsters Release Date: January 31, 2007 (Preview)
 * MapleSEA Version 0.38

GlobalMS
Sharenian Guild Quest, Perion Excavation Site and Perion Ruins are now available in GlobalMS.
 * Monsters Release Date February 7, 2007
 * GlobalMS Version 0.34