Unnamed #80003000
ForgottenHollowLocationOther
MonstersGolden Stirge (Lv.42)
Return MapForgotten Hollow
BGMBgm03/BygoneGarden
Spawn Rate×2.0
Map MarkForgottenHollow
Closed Online Test 1 → Closed Online Test 2
MapleStory Classic World client changelog: Closed Online Test 1 to Closed Online Test 2
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.
Maps124 new · page 8 of 9
New 124Changed 230Removed 2New maps, retired maps, and every spawn table that moved between the two builds: 206 of the 230 revised maps changed what spawns on them.
Unnamed #80003100
ForgottenHollowLocationOther
Return MapForgotten Hollow
BGMBgm03/BygoneGarden
Spawn Rate×1.5
Map MarkForgottenHollow
Unnamed #80003200
ForgottenHollowLocationOther
MonstersMano
Return MapForgotten Hollow
BGMBgm03/CavernOfShadows
Spawn Rate×0.1
Map MarkForgottenHollow
Unnamed #80003300
ForgottenHollowLocationOther
Return MapForgotten Hollow
BGMBgm03/CavernOfShadows
Spawn Rate×1.5
Map MarkForgottenHollow
Unnamed #80003400
ForgottenHollowLocationOther
MonstersMano
Return MapForgotten Hollow
BGMBgm03/CavernOfShadows
Spawn Rate×0.1
Map MarkForgottenHollow
Unnamed #80003500
CoT2: From Closed Online Test 2 (Beta 2). Not in the Grand Launch; kept here as a record.ForgottenHollowLocationOther
MonstersZombie Mushroom (Lv.24)Rotten Mushmom (Lv.60)Curse Eye (Lv.29)Evil Eye (Lv.30)Blue Mushroom (Lv.30)Zombie Mushmom (Lv.50)
BGMBgm03/BygoneGarden
Spawn Rate×1.5
Map MarkForgottenHollow
LocationOther · Yellow Mushroom House
Connects ToHenesys
Return MapHenesys
BGMBgm00/FloralLife
Map MarkHenesys
Another Sanctuary
CoT2: From Closed Online Test 2 (Beta 2). Not in the Grand Launch; kept here as a record.ForgottenHollow#10006162LocationVictoria Island · Deep Passage
Return MapForgotten Hollow
BGMBgm03/CavernOfShadows
Spawn Rate×1.3
Map MarkForgottenHollow
LocationVictoria Island · Victoria Road
NPCsPurin
Return MapEllinia Station
BGMBgm01/MoonlightShadow
Map MarkEllinia
Collision of Ice and Fire
CoT2: From Closed Online Test 2 (Beta 2). Not in the Grand Launch; kept here as a record.ForgottenHollow#10006022LocationVictoria Island · Hidden Street
Connects ToPrimeval Forest IICoT2: From Closed Online Test 2 (Beta 2). Not in the Grand Launch; kept here as a record.Forgotten Dungeon TunnelCoT2: From Closed Online Test 2 (Beta 2). Not in the Grand Launch; kept here as a record.
Return MapForgotten Hollow
BGMBgm03/BygoneGarden
Spawn Rate×0.6
Map MarkForgottenHollow
Decayed Tunnel II
CoT2: From Closed Online Test 2 (Beta 2). Not in the Grand Launch; kept here as a record.ForgottenHollow#10006130LocationVictoria Island · Deep Passage
Connects ToDecayed Tunnel IIICoT2: From Closed Online Test 2 (Beta 2). Not in the Grand Launch; kept here as a record.Decayed Tunnel ICoT2: From Closed Online Test 2 (Beta 2). Not in the Grand Launch; kept here as a record.
Return MapForgotten Hollow
BGMBgm03/CavernOfShadows
Spawn Rate×1.5
Map MarkForgottenHollow
Decayed Tunnel III
CoT2: From Closed Online Test 2 (Beta 2). Not in the Grand Launch; kept here as a record.ForgottenHollow#10006140LocationVictoria Island · Deep Passage
Connects ToDecayed Tunnel IICoT2: From Closed Online Test 2 (Beta 2). Not in the Grand Launch; kept here as a record.Lingering RegretCoT2: From Closed Online Test 2 (Beta 2). Not in the Grand Launch; kept here as a record.
Return MapForgotten Hollow
BGMBgm03/CavernOfShadows
Spawn Rate×0.6
Map MarkForgottenHollow
Dilapidated Tomb
CoT2: From Closed Online Test 2 (Beta 2). Not in the Grand Launch; kept here as a record.ForgottenHollow#10006161LocationVictoria Island · Deep Passage
Connects ToAnother SanctuaryCoT2: From Closed Online Test 2 (Beta 2). Not in the Grand Launch; kept here as a record.Precipice of DarknessCoT2: From Closed Online Test 2 (Beta 2). Not in the Grand Launch; kept here as a record.
Return MapForgotten Hollow
BGMBgm03/CavernOfShadows
Spawn Rate×1.1
Map MarkForgottenHollow
