MapleStory Quest

Closed Online Test 1 → Closed Online Test 2

MapleStory Classic World client changelog: Closed Online Test 1 to Closed Online Test 2

BuildGrand LaunchPublic ReleaseClosed Online Test 2+1,155 added~2,335 changed-853 removed
What changed in the game files between the two closed tests, 21 April 2026 and 4 August 2026. Kept for the record: the site is built from the Grand Launch now, and what the second test had that the release does not is marked CoT2: From Closed Online Test 2 (Beta 2). Not in the Grand Launch; kept here as a record..
About this page

What it is

Two client exports compared field by field, not Nexon’s patch notes, so it shows changes nobody announced. It can’t say why something changed: a typo fix and a rebalance look the same.

What it misses

Drop rates, shop stock and quiz answers live on the server, so they never show up here. Some of what arrived, like Orbis and 3rd job, was held back from the Public Release; this site keeps those pages, marked CoT2.

Closed Online Test 2 is dated 4 August at the end of the older diff and 11 August at the start of the newer one, and both are right: the first was made from the build the test opened on, the second from the one its 11 August balance maintenance left. What that maintenance changed (Rush’s cooldown went from 3 seconds to 1, for one) is in neither diff.

From the OSMS Data Explorer datamine of 5 August 2026. More on the sources.

Monsters80 changed · page 2 of 5

New 104Changed 80Removed 0

The changes most likely to have been felt while playing. Accuracy, HP, attack and knockback were all retuned, and every monster keeps its own row.

BaseLv.46 · HP 2,671 · MP 100 · EXP 122
HP2,8572,671
P.ATK247243
M.ATK371267
ACC124125
AVOID2524
KB135225
BaseLv.15 · HP 259 · MP 30 · EXP 28
HP262259
P.ATK5961
ACC8481
AVOID109
KB4530
Elements-Lightning Weak
BaseLv.45 · HP 2,595 · MP 150 · EXP 117
HP2,7732,595
P.ATK238262
ACC134124
AVOID2527
KB135225
Elements-Fire StrongIce Weak
BaseLv.52 · HP 3,136 · MP 75 · EXP 155
HP3,3303,136
P.ATK306270
ACC129131
AVOID3130
KB150275
Elements-Ice StrongFire Weak
BaseLv.58 · HP 5,428 · MP 150 · EXP 197
HP5,6815,428
P.ATK371297
ACC130121
KB1,000975
ElementsHoly WeakPoison StrongFire StrongHoly Weak
Self Buffsid 100level 2name Attack Buffx 130time 30interval 40id 102level 2name Defense Buffx 60time 10interval 120id 160level 2name Skill 160x 40time 30interval 40id 161level 2name Skill 161x 60time 10interval 120
BaseLv.50 · HP 3,218 · MP 150 · EXP 142
HP3,4453,218
P.ATK285287
ACC139129
AVOID3126
KB150275
Elements-Fire StrongIce Strong

Jr. Balrog

Boss#700001
BaseLv.80 · HP 325,400 · MP 500 · EXP 1,612
HP138,840325,400
P.ATK1,676972
M.ATK1,8441,069
ACC158163
AVOID3743
KB3,0006,750
BaseLv.35 · HP 1,395 · MP 300 · EXP 74
HP1,4601,395
P.ATK134154
ACC129125
AVOID2225
KB500300
Elements-Poison Strong
BaseLv.37 · HP 1,336 · MP 100 · EXP 82
HP1,4121,336
P.ATK180203
M.ATK270222
ACC126116
AVOID2126
KB105125