Dungeon Astrub
Sandy Castle
Level 20 dungeon in the Astrub Rocky Inlet, at [13,-28]: six rooms of Snappers, each armored in its color, and a small boss who heals himself, Sponge Mob. Quests and key, map of the rooms, strategy, monsters, achievements and loot.
![Sandy Castle: the dungeon entrance, at [13,-28] (Astrub Rocky Inlet)](/wp-content/uploads/dofus/donjon-chateau-ensable-entree-grand.webp)
Quests linked to the Sandy Castle
Two quests give the key, a third is completed on Sponge Mob. Accept Foam Dungeon before entering: a fight won without the quest in progress doesn't count.
She gives you the dungeon key. Defeat 3 White, 3 Blue, 3 Brown and 3 Green Snappers on the beaches of the Rocky Inlet, in any order you like, then go back to Gorton Fisher.
- Start
- Gorton Fisher, Astrub Rocky Inlet
- Prerequisites
- Level 15
Sandy Castle Keyand 31,000 XP
The dungeon quest. Belina Thumb sends you to inspect the castle: defeat Sponge Mob in a single fight, discover the Sandy Castle exit, then report back to her. She opens the next one, Rikiki Dungeon.
- Start
- Belina Thumb, Astrub
- Prerequisites
- Level 20
A second key, with no fight. Follow the dialogues between Wartella and Red Sharkham at the harbour, then hand 6 Piglet Milk to Wartella.
- Start
- Wartella, Madrestam Harbour
- Prerequisites
- Level 11
Sandy Castle Keyof the Shigekax and 31,000 XP
For later
Sponge Mob's soul is in demand. The Ochre Dofus quest asks for the souls of many dungeon guardians: capture this one while you're passing through, with a Soul Stone for Small Souls.
- Start
- Otomai, Otomai Island
- Prerequisites
- Level 40
Ochre Dofusat the end of the 19 steps
During events
- Merry Kwismas
Defeating Sponge Mob in a single fight is part of the quest. Harry Kwismas, . - Tiwotokar Simulation
Tiwotokar can designate Sponge Mob as the guardian to defeat. Astrub, .
The key is also used elsewhere: the Almanax offering Offering for Mascha asks for a Sandy Castle Key from Antyklime Ax.
The 6 rooms of the Sandy Castle
Six rooms up to Sponge Mob, filled with Snappers of five colors: each takes 50% in the element of its color. For each room: the scenery, then the tactical view with the starting cells (blue: you, red: the monsters). Tap an image to enlarge it.
Room 1


Room 2


Room 3


Room 4


Room 5


Room 6 — Sponge Mob


Defeat Sponge Mob
The wrong reflex against Antiks
The Kloon Snapper sometimes places 16 reflected damage on itself for a turn. Check its state before hitting it: one turn on another target saves you from losing HP for nothing.
Level 20
280 HP
6 AP
3 MP
- Resistances (%)
Earth 14%
Fire 14%
Water 14%
Air 14%
Neutral 14%
Only 280 HP and 14% resistance everywhere, but it heals in an area with Spontaneous Regeneration. In contact, Scrub steals life and removes 2 range, and Rinse shortens your effects around it. No element needs to be avoided against it.
ScrubIn contact: life steal and 2 range removed for a turn. Keep your characters away from Sponge Mob.
RinseShortens the duration of your effects around it: buff yourself away from Sponge Mob.
Spontaneous RegenerationHeals Sponge Mob and his neighbors for 1 AP: kill him in one go rather than over several turns.
The four-step strategy against Sponge Mob
The right element for each Snapper. Each Snapper takes 50% in its color and loses 9% in two other elements. Hit each one where it is weak rather than forcing your element; the Kloune, at 16% everywhere, can be hit in any of them.
The supports first. The Brown Snapper heals its allies, the Blue Snapper removes MP up to 8 range: kill them first, then the others. Hit the Kloon outside Antiks.
Sponge Mob at range. Don't offer him an isolated character in contact: Scrub deprives you of range. Don't buff yourself near him, Rinse shortens your effects within a radius of 2 cells.
Finish him in one go. Once his Snappers are down, put all your damage on him: 280 HP can be removed in one turn, before he heals himself with Spontaneous Regeneration.
The monsters of the Sandy Castle
Five level 16 Snappers with 90 HP. Four of them take 50% in their color and lose 9% in two other elements; the Kloon resists 16% everywhere. The resistances in red are their weaknesses.
In which order to kill the monsters
- Brown Snapper — it heals its allies with Sea Salt and hits at range.
- Blue Snapper — it removes 1 MP up to 8 range with Wavelet.
- Green Snapper, then White Snapper — they only hit in contact: kill them afterward, from a distance.
- Kloon Snapper — hit it only when Antiks is not active.
Level 16
90 HP
6 AP
3 MP
- Resistances (%)
Earth -9%
Fire 50%
Water 10%
Air -9%
Neutral 10%
Burning Sand hits in a cross up to 5 range, and Sea Salt heals its allies around it while reducing your Intelligence. It absorbs Fire very well: hit it with Air or Earth.
Burning Sand
Sea SaltHeals the Snappers around it and reduces your Intelligence for 2 turns.
Level 16
90 HP
6 AP
3 MP
- Resistances (%)
Earth 10%
Fire -9%
Water 50%
Air -9%
Neutral 10%
Wavelet removes 1 MP up to 8 range, in a perpendicular line, and Resistivity gives 10% resistances to its nearby allies. It absorbs Water: hit it with Air or Fire.
WaveletRemoves 1 dodgeable MP up to 8 range, in a perpendicular line of 3 cells.
Resistivity
Level 16
90 HP
6 AP
4 MP
- Resistances (%)
Earth 50%
Fire -9%
Water 10%
Air -9%
Neutral 10%
Repulsion hits in contact and pushes back one cell, Infuriating Wave gives power to its allies and removes Strength from you. Hit it with Air or Fire, never Earth.
RepulsionPushes back one cell in contact.
Infuriating Wave50 power for the nearby Snappers, 50 less Strength for you, 2 turns.
Level 16
90 HP
6 AP
4 MP
- Resistances (%)
Earth -9%
Fire -9%
Water 10%
Air 50%
Neutral 10%
Puff of Air hits in contact and reduces your MP Parry, Earthly Swim gives flight and lock to its allies. Hit it with Earth or Fire, never Air.
Puff of Air
Earthly Swim
Level 16
90 HP
6 AP
4 MP
- Resistances (%)
Earth 16%
Fire 16%
Water 16%
Air 16%
Neutral 16%
No weakness, 16% resistance everywhere. Joek hits in Earth and Air up to 3 range with a small poison, and Antiks reflects 16 damage back to it for a turn: switch targets for the duration of the effect.
Joek
Antiks16 damage reflected for a turn: hit another target.
Preparing your run through the Sandy Castle
One of the very first dungeons, for teams of level 10 to 20 discovering elemental resistances. People come here for Foam Dungeon, the Sponge Set and Sponge Mob's soul for the Ochre Dofus, with a Soul Stone for Small Souls (captures up to level 50).
How to enter the Sandy Castle
The entrance is in the Astrub Rocky Inlet, at ; the nearest zaap is the Pandala Village one . Three ways to open it: a Sandy Castle Key (consumed), the key ring if it is registered there, or the automatic group search. Two quests give the key: Like a Snapper out of Water and Wartella's Teeth.
Crafting the Sandy Castle Key
It is made at a Handyman's workshop. Five ingredients drop from the Snappers, at 55%: Beach Towel (White), Prize Fin (Blue), Suntan Lotion (Brown), Marine Conch (Green) and Rotten Meat. Trout (fishing), Sage and Barley (harvesting) complete the recipe.
| Ingredient | Quantity | Level |
|---|---|---|
| 2 | 18 | |
| 2 | 18 | |
| 2 | 18 | |
| 2 | 18 | |
| 2 | 20 | |
| 2 | 20 | |
| 2 | 20 | |
| 2 | 20 |
Which team to bring against Sponge Mob
At least two elements. Each Snapper takes 50% in its color: two different elements in the team keep you from getting stuck on one of them. Fire and Air together cover all the colors.
A pushback. Classes that push back, remove MP or protect an ally are comfortable in these rooms. A pushback or a pull is essential for the Special achievement.
The five achievements of the Sandy Castle
Each achievement gives 31,000 XP and 2 Sponge Mob Skin, Duo doubles the XP. Killing Sponge Mob on turn 1 settles the Special achievement in advance.
| Achievements | Condition | Points | XP |
|---|---|---|---|
| Defeat Sponge Mob as a team in his dungeon by completing the “Misanthrope” challenge. | 10 | 31 000 | |
| Defeat Sponge Mob in his dungeon by completing the “Sponge Shover” challenge. | 10 | 31 000 | |
| Defeat Sponge Mob in his dungeon by completing the “Duo” challenge. | 20 | 62 000 | |
| Defeat Sponge Mob in his dungeon by completing the “Versatile” challenge. | 10 | 31 000 | |
| Defeat Sponge Mob in this boss's dungeon. | 10 | 31 000 |
Special: Sponge Shover
From turn 2, Sponge Mob must be pushed or pulled at least once each global turn. Ideally: kill Sponge Mob on turn 1, so you never have to push him. Otherwise, keep a pushback or a pull available for him each turn, and don't finish him off before you have made sure of that movement.
Misanthrope
No ally may end their turn on a cell adjacent to another ally. Give each character an area and use the obstacles to keep your distance. Check your cell before ending, especially after a Repulsion that moved you.
Versatile
Each ally may use the same action only once during their turn. Prepare several damage and movement spells. With 90 HP per Snapper, two different spells are often enough to kill one without repeating an action.
Duo
Two characters at most, under 20 turns. Two complementary characters, who hit at range and handle positioning. Kill the support Snappers, then put all your damage on Sponge Mob to finish him before he heals.
Drops and loot of the Sandy Castle
Base in-game rates, before Prospecting bonuses.
On Sponge Mob
Sponge Mob SkinSkin55 %
Slimy ScaleSkin9,24 %
Nougat Rabmarac BarTreat6 %
Barrel of Drinking WaterContainer3 %
Rotten CarrionMeat2,77 %
1 rare item is added at 0.05% each: Al Howin Gobtubby.
On the henchmen of Sponge Mob
Rotten MeatMeat · White Snapper55 %
Beach TowelFabric · White Snapper55 %
Prize FinMiscellaneous Resource · Blue Snapper55 %
Glacial FluidLiquid · Kloon Snapper55 %
Suntan LotionMiscellaneous Resource · Brown Snapper55 %
Marine ConchMiscellaneous Resource · Green Snapper55 %
QuestheadHat · White Snapper12 %
Slimy ScaleSkin · White Snapper9,24 %
Barrel of Drinking WaterContainer · White Snapper1 %
Sponge RingRing · White Snapper1 %
Sponge BeltBelt · White Snapper1 %
Sponge BootsBoots · Blue Snapper1 %
Sponge HelmetHat · Blue Snapper1 %
Sponge AmuletAmulet · Brown Snapper1 %
Sponge ShovelShovel · Brown Snapper1 %
SponghieldShield · Green Snapper1 %
Sponge CapeCloak · Green Snapper1 %
Sponge Set
Eight pieces of level 20 to 25, at 1% from the Snappers. Chance, Agility and Vitality, with 1 AP from seven pieces.
Sponge Amulet16 to 20 Vitality, 16 to 20 Chance
Sponge Ring16 to 20 Vitality, 2 Flight
Sponge Shovel16 to 18 Water damage, 7 to 10 Vitality
Sponge Boots21 to 25 Vitality, 16 to 20 Agility
Sponge Belt21 to 30 Agility, 2 Flight
Sponge Cape11 to 15 Agility, 21 to 25 Chance
Sponge Helmet11 to 15 Vitality, 11 to 15 Chance
Sponghield16 to 25 Vitality, 4 to 6% Air Resistance
Capturing the soul of Sponge Mob
A Soul Stone for Small Souls (captures up to level 50) is enough for this level 20 boss. The soul is used for the quest An Eternal Harvest for the Ochre Dofus, which asks for that of every dungeon guardian.
| Stone ingredient | Quantity |
|---|---|
| 10 | |
| 1 |
The Sandy Castle as a guild Expedition
The same dungeon exists as a Guild Expedition. Same names, entirely different mechanics:
- Sponge Mob has 100% resistance everywhere, his Snappers are invulnerable, and killing him is enough to win; there is always one Snapper of each color, even with four;
- each damage line on a Snapper removes 1% resistance from Sponge Mob, for the whole fight, and deals him the same damage in the Snapper's element, wherever he is: hit the Snappers with area spells and several damage lines;
- when killed, the Kloon Snapper comes back on your side under its killer's control: protect it, its Antiks doubles the damage reflected to the boss;
- get out of the Brown Snapper's red glyph, which removes 10 MP, applies Gravity and hits hard at the end of the turn: an Abyssal Dofus or a rush spell helps you get out;
- keep Sponge Mob away: his poison from 3 range or more sets up a very strong hit at 2 range. A tank can lock him, but watch out for the Blue Snapper's untackleable state;
- avoid Air, which all the enemies take at more than 50%, and prefer playing with five. Without pushback resistance, the boss also dies to pushback damage, but he heals every 4 turns: erode him.
Where is the Sandy Castle?
In the Astrub Rocky Inlet, at . The nearest zaap is the Pandala Village one .
What level should I do the Sandy Castle at?
From level 10, comfortably at 20. Sponge Mob is level 20 with 280 HP, his Snappers level 16.
Which quest should I do at the Sandy Castle?
Foam Dungeon, at Belina Thumb's in Astrub : defeat Sponge Mob, discover the castle exit, then report back to her. Do Like a Snapper out of Water first, which gives the key.
How do I get the Sandy Castle Key?
Two quests give it: Like a Snapper out of Water, at Gorton Fisher's , and Wartella's Teeth, at the Madrestam harbour . It is also made with the Snappers' resources.
Which element should I use against the Snappers?
Never the one of their color, which they take at 50%. Earth or Fire against the White one, Air or Fire against the Blue and the Green, Air or Earth against the Brown.
Which monster should you target first in the Sandy Castle?
The Brown Snapper, which heals, then the Blue Snapper, which removes MP at range. Hit the Kloon only outside Antiks.
Which stone should I use to capture Sponge Mob?
A Soul Stone for Small Souls (captures up to level 50). Sponge Mob's soul is in demand for the Ochre Dofus.
Can the Sandy Castle be done with two?
Yes, it is even an achievement: Duo, in under 20 turns. Two complementary characters, who hit at range and handle positioning.
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