MapleStory Classic Mushmom Guide: Hidden House, Respawn, Drops

Quick summary

• Mushmom is a level 40 boss with 34,440 HP and 340 EXP, weak to Fire. It spawns once in Someone Else's House, a hidden map off Pig Park II near Henesys (NiaMeowDB, MapleClassic Wiki, henesys.gg).
• The portal isn't drawn. From Henesys, go through An Empty House, Pig Park and Pig Park II, then press up at the top right of Pig Park II (Metaroad).
• The game timer is 1 hour. Live respawns can run to about 90 minutes, which is a community estimate (NiaMeowDB, Metaroad).
• The room is full of Iron Hogs with 500 physical defense. Magic and Lightning handle them better than weapons do (MapleClassic Wiki).
• Thieves come here for Ilbi Throwing Stars (+27 W.ATK). No shop sells them. Everyone else comes for the Mushmom Spore that Jane's level 44 quest asks for.

Checked against the Founder's Access build on October 13, 2026. Grand Launch is October 21, 2026; see the end of the guide for what may change.

Find Someone Else's House

Metaroad's route, which matches the wiki's note that Henesys is four maps away:

Step	From	Portal	To
1	Henesys	Left portal	An Empty House
2	An Empty House	Left portal	Pig Park
3	Pig Park	Right portal	Pig Park II
4	Pig Park II	Hidden portal, top right	Someone Else's House

Metaroad warns that "None of those portals are drawn, so walk along the edges and press up." The wiki says Someone Else's House "opens only onto Pig Park II," and Mushmom spawns on no other map.

What's in the room, per the wiki's map page:

Monster	Level	HP	EXP	Spawns	Respawn
Iron Hog	28	572	52	13	1 sec
Fairy 2	29	593	54	2	180 sec
Mushmom	40	34,440	340	1	3,600 sec

NiaMeowDB lists the map at a 1.3x mob rate, with Mushmom as 1 of 16 spawns.

Deal with the Iron Hogs

The Iron Hogs are the part most guides skip. The wiki lists them at 500 physical defense and 100 magic defense, weak to Lightning, and calls them "notoriously difficult for physical attackers to damage." They respawn every second (wiki map page), so you can't clear the room and keep it clear.

What that means for you:

• Magicians clear the room easily. Ice/Lightning Wizards hit their Lightning weakness. Our Ice/Lightning guide covers Thunder Bolt.
• Warriors, Bowmen and Thieves should ignore the hogs and focus Mushmom. Hogs will still touch you, so bring potions.
• A party can split the work. Metaroad says "a level 30 party can clear the room and still get the boss."

Read Mushmom's stats

Stat	Value	Source
Level	40	Wiki, NiaMeowDB
HP / MP	34,440 / 200	Wiki
EXP	340	Wiki, NiaMeowDB (376 in COT2)
Weapon ATK / Magic ATK	532 / 585	Wiki, NiaMeowDB
Touch damage	585–797	NiaMeowDB
Physical DEF / Magic DEF	15 / 15	Wiki, NiaMeowDB
Accuracy	130	Wiki, NiaMeowDB
Avoidability	29	Wiki, NiaMeowDB
Speed	5 (fast)	Wiki, NiaMeowDB
Knockback threshold	2,750 damage	Wiki, NiaMeowDB, henesys.gg
Weakness	Fire	Wiki, NiaMeowDB, henesys.gg
Damage reduction	Weapon 13%, magic 13%	henesys.gg
HP recovery	+344 HP per tick	NiaMeowDB

A few of these change the fight:

• It's fast and it jumps. NiaMeowDB says Mushmom "can hop to a floor above or below its spawn point." Unlike Mano, it won't stay on one platform for you to kite.
• Knockback 2,750 means very few level 40 hits will stagger it.
• It heals 344 HP per tick, almost five times Mano's 74. NiaMeowDB doesn't give the interval, but a slow fight loses ground.
• HP per EXP is 101.29, ranked #176 of 182 by NiaMeowDB. As with Mano, you're here for drops, not EXP.

Dodge the lunge

NiaMeowDB lists one attack besides touch damage:

Attack	Damage	Timing
Touch	585–797	Any contact with its 119 × 110 px touch zone
Lunge (Attack 1)	125% of its P.DMG (about 665 base, by our arithmetic from 532)	800 ms telegraph, 1.85 sec cycle, 3 sec recovery

NiaMeowDB calls it a jump attack that Mushmom uses to "lunge at you and close distance fast"; Metaroad describes the same jump. Watch for the 800 ms wind-up. Then use the 3-second recovery to get your hits in or reposition. Mushmom is auto-aggressive, so it starts the fight as soon as it sees you.

Metaroad lists a magic hit of "about 880" as well. NiaMeowDB lists a Magic ATK of 585 but no magic attack. Plan for HP of at least 880 either way.

Check your accuracy

Your level	NiaMeowDB: accuracy to never miss	Metaroad: accuracy to never miss
40	95	79
35	114	95
30	132	110

Plan for NiaMeowDB's higher numbers. Metaroad adds that fighting 5 levels under a boss "takes about 11% off every hit, and ten under takes a third," and that Magicians "get far less accuracy per point." A mage at 30 should check this before walking in. Our accuracy guide has the formula.

Count your hits

Plain arithmetic on 34,440 HP, rounded up. It doesn't model misses, regen, or the Fire bonus:

Damage per hit (after Mushmom's reduction)	Hits to kill
300	115
500	69
800	44
1,200	29
2,000	18

To use it, take your damage on a regular monster near level 40 and take off about 13% (henesys.gg). Fire attacks do more, since Mushmom is Fire-weak, but none of our sources give the multiplier, so we leave it out. Multiply the hit count by your MP cost per attack, and compare it with your MP pool plus potions. Our potions guide compares potions by meso value.

Pick a plan by class

The plans below follow the numbers in the table; treat them as a starting point, not a tested clear:

Class	Approach	Why
Fire/Poison Wizard	Fire Arrow on Mushmom	Fire Arrow hits Mushmom's Fire weakness. See our Fire/Poison guide.
Ice/Lightning Wizard	Thunder Bolt the hogs, then single-target Mushmom	Iron Hogs are Lightning-weak.
Assassin	Range it with stars	Ilbi farming is the reason to come. See our Assassin guide.
Warrior	Tank and burst	Touch damage up to 797, so bring HP and potions. Ignore the hogs.
Bowman	Shoot from a different floor, then reposition when it jumps	Mushmom jumps floors, so no kiting spot stays good for long.
Cleric	Heal the party	NiaMeowDB lists Mushmom as a Plant, not undead, so Holy isn't a weakness. Heal keeps the party up.
Party at Lv 30–40	One player clears hogs, the rest focus Mushmom	Metaroad's level 30 party suggestion. Being 10 under costs a third of your damage.

Time the respawn

Source	Respawn
NiaMeowDB	1 hour base timer, live window 1 to 1.5 hours ("unconfirmed"). It says "channel surfing matters."
Metaroad Boss Timer	Game timer 1 hour, 60–90 minute window. It says players "have reported Mushmom coming back closer to 90 minutes."
MapleClassic Wiki	60 minutes (3,600 sec on the map page)
henesys.gg	1 hour

Use the same channel rotation as for Mano. Kill it and note the time, check the next channel, and come back about 60 minutes later. Expect it as late as 90. The Iron Hogs respawn every second, so you can train on them while you wait.

Know the drops and what they're for

Drop	What it is	Use
Mushmom Spore	Etc item. Sells for 400 mesos, stacks to 200 (wiki). henesys.gg lists it as Mushmom's drop.	Jane's Second Challenge (below)
Ilbi Throwing Stars	Throwing star: Lv 10, +27 W.ATK, stacks to 800, sells for 20,000 mesos, recharges at 0.9 mesos per star (wiki, pre-launch data)	Assassin ammo. Metaroad: "No shop sells them, and at launch only Mushmom and Zombie Mushmom drop them."

No source publishes drop rates. NiaMeowDB's confirmed-drop list is crowd-voted. Its separate "MSEA reference" list of 16 items includes Red-Hearted Earrings, Steel Tower Shield, Fairy Wand and several Intermediate scrolls. NiaMeowDB labels that list historical, from old MapleSEA tables. Don't farm for any of those until players confirm them in Classic World.

Jane's Second Challenge: level 44, after Jane's First Challenge, started from Jane in Lith Harbor.

Requirement	Amount
Defeat Wraith	50
Defeat Malady	50
Drake's Blood	3
Mushmom Spore	1
Medicine With Weird Vibes	25
Malady's Experimental Frog	25
Rewards	9,940 EXP, 1,389 mesos, 15 Power Elixirs

You need just 1 Spore, so one kill can cover it.

See what changed since the closed test

NiaMeowDB's change history shows Mushmom was retuned at launch:

Stat	COT2	Launch
HP	36,660	34,440
EXP	376	340
P.DMG / M.DMG	403 / 403	532 / 585
P.DEF / M.DEF	10 / 10	15 / 15
Accuracy	129	130
Knockback threshold	1,500	2,750
HP recovery	188	344

It has less HP, but it hits about a third harder and heals faster. Guides written before launch understate the damage.

Plan alts and returning players

• Returning from the closed tests? Mushmom pays 340 EXP now, not 376, and it hits harder (NiaMeowDB). Metaroad says the first closed test used a 30-minute timer. It's 1 hour now.
• Returning from old MapleStory? Don't assume old drop tables carry over. NiaMeowDB keeps its MSEA list separate for that reason.
• Leveling an Assassin alt? An Ilbi stack is worth the trip. Recharging costs 0.9 mesos per star (wiki).
• Doing Jane's quests on an alt? One Spore is all you need.
• Short on time? Our bosses guide, MapleStory Classic hub and powerleveling page cover the next steps.

Want a hand with this?

If you would rather not grind this part yourself, MapleStory Classic powerleveling services are listed on FullBoosts. Read Nexon's Terms of Service before you buy any service from anyone, FullBoosts included — a marketplace listing isn't publisher permission.

What may change at Grand Launch

This guide describes the Founder's Access build as it was on October 13, 2026. Re-check these against Nexon's Grand Launch notes on October 21: whether crafting still stops at craft level 8, whether Forgotten Hollow, Orbis and third jobs stay closed, KPQ channel limits, NPC shop stock, and any Founder's Access-only events or packages mentioned here. Nothing here assumes a closed area or feature will open.

FAQ

Where is Mushmom in MapleStory Classic? In Someone Else's House. From Henesys, go left to An Empty House, left to Pig Park, right to Pig Park II, then take the hidden portal at the top right (Metaroad).

How long is Mushmom's respawn? The game timer is 1 hour. Players report up to about 90 minutes, which is a community estimate (NiaMeowDB, Metaroad).

What is Mushmom weak to? Fire, per NiaMeowDB, the wiki and henesys.gg. Metaroad's Sep 30 guide still says neutral.

What level should I be for Mushmom? Level 40 at full damage. Metaroad says a level 30 party can do it. Check accuracy first: NiaMeowDB lists 95 at level 40 to never miss.

Does Mushmom drop Ilbi stars? Metaroad says Mushmom and Zombie Mushmom are the only Ilbi sources at launch. No drop rate is published.

What is the Mushmom Spore for? Jane's Second Challenge in Lith Harbor, a level 44 quest that needs 1 Spore. It pays 9,940 EXP, 1,389 mesos and 15 Power Elixirs (wiki).

Why can't I hurt the pigs in Mushmom's room? Iron Hogs have 500 physical defense. Magic, especially Lightning, works much better.