Secret Dungeons are hidden dungeons opened for an exact one hour, which can only be found in the five Halls of Elements (Halls of Water, Fire, Wind, Dark, Light) as a random stage clear reward. Secret dungeons consist of 10 stages, with each stage requiring players to defeat waves of one particular monster. Clearing a certain amount of stages awards players with summoning pieces for that monster. Once enough pieces have been acquired, players can summon that monster at the Summoning Circle. The number of pieces required depends on the grade of that monster. The element of the dungeon's monster depends on which Hall the Secret Dungeon was discovered in, with the Hall of Light giving only Light monsters, and so on.
Finding a Secret Dungeon
Only one Secret Dungeon may be discovered at a time, although players may enter into other players' dungeons if they have been befriended. A Secret Dungeon that's been discovered is available to all players in the friends list, whether that person was befriended before or after the discovery. Once 10 different friends have entered, it will be permanently inaccessible for any other friend that tries to enter. If a friend enters a player's Secret Dungeon, that player is awarded one extra monster summoning piece (only one piece per friend, regardless of how many times that friend runs the dungeon).
Progression
Each Secret Dungeon consists of 10 stages, with increasing monster levels at each wave. The awakened version of the monster will start to appear stage 3. On the final stage, a boss version and two awakened versions will appear.
| Stages | Monsters | ||
|---|---|---|---|
| Normal | Awakened | Boss | |
| 1 | 9 | - | - |
| 2 | 9 | - | - |
| 3 | 9 | 3 | - |
| 4 | 7 | 2 | - |
| 5 | 6 | 2 | - |
| 6 | 4 | 3 | - |
| 7 | 3 | 3 | - |
| 8 | 3 | 2 | - |
| 9 | 2 | 2 | - |
| 10 | - | 2 | 1 |
Drop info
Upon clearing each stage, the number of summoning pieces that can be obtained will slowly increase. In addition to a base reward, there is also a chance of obtaining an additional summoning piece.
If you quit the battle at any point (through the pause menu) you are awarded as for the last cleared stage. This can be used as strategy to instantly end the run and maximize your time.
The following table shows the rewards for each stage as well as the chance for obtaining a bonus summoning piece.
| Stage cleared | Summoning Piece Reward | |
|---|---|---|
| Base reward | Chances of getting an additional piece | |
| 1 | 0 | 33% |
| 2 | 0 | 66% |
| 3 | 1 | - |
| 4 | 1 | 33% |
| 5 | 1 | 66% |
| 6 | 2 | - |
| 7 | 2 | 50% |
| 8 | 3 | - |
| 9 | 3 | 50% |
| 10 | 4 | - |
Using summoning pieces
The required number of summoning pieces depends on the natural grade of the monster.
- For a 1-Star monster, 10 summoning pieces are required. (Only available during special events)
- For a 2-Star monster, 20 summoning pieces are required.
- For a 3-Star monster, 40 summoning pieces are required.
- For a 4-Star monster, 50 summoning pieces are required. (Not available in secret dungeons, but in Hall of Heroes events)
- For a 5-Star monster, 100 summoning pieces are required. (Only avaliable in guild shop)
Table of Discoverable Secret Dungeons by Monster
| Monster | Water | Fire | Wind | Light | Dark |
|---|---|---|---|---|---|
| Beast Hunter | — | Yes | — | — | — |
| Bearman | Yes | Yes | Yes | Yes | Yes |
| Fairy | — | Yes | Yes | Yes | Yes |
| Garuda | Yes | Yes | — | — | Yes |
| Golem | Yes | — | Yes | — | — |
| Griffon | Yes | Yes | — | — | — |
| Grim Reaper | Yes | — | — | — | — |
| Harpu | — | Yes | Yes | Yes | Yes |
| Harpy | Yes | Yes | — | — | — |
| Hellhound | Yes | — | Yes | Yes | Yes |
| Howl | Yes | Yes | Yes | Yes | Yes |
| Imp | Yes | Yes | Yes | Yes | Yes |
| Monster | Water | Fire | Wind | Light | Dark |
| Inferno | Yes | — | Yes | — | — |
| Inugami | — | — | — | Yes | Yes |
| Lizardman | — | — | Yes | — | — |
| Magical Archer | Yes | Yes | Yes | — | — |
| Pixie | Yes | Yes | Yes | Yes | Yes |
| Salamander | Yes | — | Yes | Yes | Yes |
| Serpent | Yes | Yes | — | — | — |
| Vagabond | Yes | Yes | Yes | Yes | Yes |
| Viking | Yes | Yes | Yes | Yes | Yes |
| Warbear | — | — | Yes | Yes | Yes |
| Werewolf | Yes | — | Yes | — | — |
| Yeti | — | Yes | Yes | Yes | Yes |
| Monster | Water | Fire | Wind | Light | Dark |
Secret Dungeon Events
Aside from the regular ones, Secret Dungeons can also be opened during game events. These types of Secret Dungeons generally cannot be uncovered through normal means, and are only limited to the duration of the event.
The following is a list of Secret Dungeon events from the year 2014:
- Living Armor (Fire) (FUSION) - First event: Aug 8, 2014 - Aug 14, 2014
- Werewolf (Water) - First event: Aug 22, 2014 - Aug 24, 2014
- Mystic Witch (Fire) - First event: Sep 12, 2014 - Sep 14, 2014
- Inugami (Wind) - First event: Sep 26, 2014 - Sep 28, 2014
- Drunken Master (Wind) - First event: Oct 10, 2014 - Oct 16, 2014
- Werewolf (Dark) - First event: Oct 24, 2014 - Oct 25, 2014 (Halloween special event)
- Grim Reaper (Dark) - First event: Oct 31, 2014 - Nov 1, 2014 (Halloween special event)
- Minotauros (Water) - First event: Nov 14, 2014 - Nov 20, 2014
- Serpent (Fire) (FUSION) - First event: Nov 28, 2014 - Nov 30, 2014
- Imp Champion (Fire) - First event: Dec 12, 2014 - Dec 18, 2014
- Amazon (Water) - First event: Dec 26, 2014 - Dec 28, 2014
The following is a list of Secret Dungeon events from the year 2015:
- Beast Hunter (Fire) (FUSION) - First event: Jan 9, 2015 - Jan 15, 2015
- Magical Archer (Wind) - First event: Jan 23, 2015 - Jan 25, 2015
- Grim Reaper (Fire) - First event: Jan 30, 2015 - Feb 1, 2015
- Martial Cat (Water) (FUSION) - First event: Feb 13, 2015 - Feb 15, 2015
- Lizardman (Wind) (FUSION) - First event: Feb 27, 2015 - Mar 1, 2015
- Penguin Knight (Water) - First event: Mar 13, 2015 - Mar 15, 2015
- Bounty Hunter (Fire) - First event: Mar 27, 2015 - Mar 29, 2015
- Mystic Witch (Wind) - First event: Apr 10, 2015 - Apr 12, 2015
- Living Armor (Water) - First event: Apr 24, 2015 - Apr 26, 2015
- Minotauros (Fire) - First event: May 8, 2015 - May 10, 2015
- Battle Mammoth (Wind) - First event: May 22, 2015 - May 24, 2015
- Bounty Hunter (Water) - First event: Jun 5, 2015 - Jun 7, 2015
- Charger Shark (Fire) - First event: Jun 19, 2015 - Jun 25, 2015
- Martial Cat (Wind) - First event: Jul 3, 2015 - Jul 5, 2015
- Amazon (Wind) (FUSION) - First event: Jul 17, 2015 - Jul 19, 2015
- Martial Artist (Water) - First event: Aug 21, 2015 - Aug 27, 2015
- Penguin Knight (Wind) - First event: Sep 18, 2015 - Sep 20, 2015
- Frankenstein (Wind) - First event: Oct 31, 2015 - Nov 1, 2015 (Halloween special event)
- Mystic Witch (Fire) - Second event: Nov 6, 2015 - Nov 8, 2015
- Mummy (Water) (FUSION) - First event: Nov 20, 2015 - Nov 26, 2015
- Battle Mammoth (Fire) - First event: Dec 18, 2015 - Dec 20, 2015
The following is a list of Secret Dungeon events from the year 2016:
- Lizardman (Wind) (FUSION) - Second event: Jan 8, 2016 - Jan 10, 2016
- Minotauros (Water) - Second event: Dec 4, 2015 - Dec 6, 2015
- Bounty Hunter (Wind) - First event: Jan 22, 2016 - Jan 24, 2016
- Imp Champion (Fire) - Second event: Feb 5, 2016 - Feb 7, 2016
- Grim Reaper (Water) (FUSION) - First event: Feb 19, 2016 - Feb 21, 2016
- Amazon (Water) - Second event: Mar 4, 2016 - Mar 7, 2016
- Penguin Knight (Fire) - First event: Mar 18, 2016 - Mar 21, 2016
- Mystic Witch (Wind) - Second event: Apr 1, 2016 - Apr 4, 2016
- Charger Shark (Wind) (FUSION) - First event: Apr 15, 2016 - Apr 18, 2016
- Martial Cat (Water) (FUSION) - Second event: May 6, 2016 - May 9, 2016
- Lizardman (Water) - First event: May 20, 2016 - May 23, 2016
- Grim Reaper (Fire) - Second event: June 3, 2016 - June 6, 2016
- Drunken Master (Fire) - First event: June 17, 2016 - June 20, 2016
- Magical Archer (Wind) - Second event: July 1, 2016 - July 3, 2016
- Battle Mammoth (Water) - First event: July 15, 2016 - July 17, 2016
- Bounty Hunter (Fire) - Second event: August 5, 2016 - August 8, 2016
- Martial Artist (Wind) - First event: August 19, 2016 - August 22, 2016
- Penguin Knight (Water) - Second event: Sep 2, 2016 - Sep 4, 2016
- Lizardman (Fire) - Second event: Sep 23rd, 2016 - Sep 26th, 2016
- Amazon (Wind) (FUSION) - Second event: Oct 7th, 2016 - Oct 10th, 2016
- Frankenstein (Water) - Second event: Oct 21st, 2016 - Oct 24th, 2016
- Minotauros (Fire) - Second event: Nov. 4th, 2016 - Nov 7th, 2016
- Beast Hunter (Wind) - First event: Nov. 18th, 2016 - Nov 21st, 2016
- Living Armor (Water) - Second event: Dec. 2nd, 2016 - Dec. 5th, 2016
- Martial Cat (Fire) (FUSION) - First event: Dec. 16th 12pm - Dec. 19th 12am
The following is a list of Secret Dungeon events from the year 2017:
- Battle Mammoth (Wind) - Second event: Jan 6th, 2017 - Jan 9th, 2017
- Mystic Witch (Fire) - Third event: Feb 3rd, 2017 - Feb 6th, 2017
- Mummy (Wind) - First event: Feb 17th, 2017 - Feb 20th, 2017
- Martial Artist (Water) - Second event: 3rd Mar, 2017 - 6 Mar, 2017
- Elven Ranger (Fire) - First event: Mar. 17th, 2017 - Mar. 20th, 2017
- Penguin Knight (Wind) - Third event: Mar. 31st, 2017 - Apr. 3rd, 2017
- Beast Hunter (Water) - ??? ???
In other languages
| Language | Title | Notes |
|---|---|---|
| English | Secret Dungeon | |
| Korean | 비밀 던전 | |
| Japanese | 秘密ダンジョン | Himitsu Danjon |
| Traditional Chinese | 秘密地下城 | |
| Simplified Chinese | 秘密地下城 | |
| French | Donjon Secret | |
| German | Geheimer Dungeon | |
| Russian | Секретное подземелье | |
| Portuguese | Masmorra Secreta | |
| Spanish | Mazmorra Secreta | |
| Indonesian | Secret Dungeon | |
| Malay | Penjara Bawah Tanah Rahsia | |
| Vietnamese | Hầm Ngục Bí Mật | |
| Thai | กรุลับ |
| World Map | |
|---|---|
| Scenarios | Garen Forest • Mt. Siz • Kabir Ruins • Mt. White Ragon • Telain Forest • Hydeni Ruins • Tamor Desert • Vrofagus Ruins • Faimon Volcano • Aiden Forest • Ferun Castle • Mt. Runar • Chiruka Remains • Iran Desert • Panther Volcano • Chomp Town • Suburban Flats • Movers of Arabia • Mt. Olympus • Sharkbite Shores |
| Dungeons | Cairos Dungeon • Hall of Light • Hall of Dark • Hall of Fire • Hall of Water • Hall of Wind • Hall of Magic • Giant's Keep • Dragon's Lair • Necropolis • Secret Dungeons • Hall of Heroes • Angel Garden • Rainbow Garden • Devilmon Cave |
| Rifts | Dimensional Rift • World Boss • Rift of Worlds • Air Raid |