• Level Required: 40
• Party Count: 1+
• Location: /navi alberta 214/74Copied!
• Cooldown: 3 Days
• Rewards:
  • Meteorite Dust
  • Experience

Video Guide by Wandering Star
Video Run by Tiger Ranger

To begin, the party leader can speak to Leticia in Alberta. She will create an instance based on the party leader's level in the form of ranks.

This rank system is automatically selected for the player and cannot be modified.

Consequently, the leader must ensure all party members are within the rank's level range. Any members outside the range will be denied entry to the instance by Leticia.

Once inside, the 30 minute time limit begins. The party leader must talk to Leiticia to either start the instance or increase the difficulty.

The default difficulty level is 1. To change the difficulty, Leticia requires 10 Meteorite Dust, then the party leader can select a difficulty from 1 through 5.

Increasing the difficulty will also increase the following:

• Number of monsters per floor
• Monster's damage
• Monster's health
• Monster's defenses
• Experience granted from monsters. See Rewards section.
• Bonus experience granted from 5th floor increments. See Rewards section.

The reminiscence of Endless Tower sunk by Betelgeuse is now open for players to uncover in a new instance appropriately called Sunken Tower.

After the party leader selects the difficulty and initiates instance, monsters will spawn. Players must clear all monsters on the floor to proceed to the next floor.

The instance has an endless amount of floors, even beyond floor 100. It is only limited by the 30 minute timer.

When all monsters are defeated, the dimensional device at the end of the floor will allow the party leader to send all members to the next floor.

Every 5 floors, the dimensional device will grant bonus experience a chance to acquire 1 Meteorite Dust. See Rewards section.

The party members must talk to the dimensional device to be rewarded. Only the party leader can forcibly proceed the party to the next floor ignoring unrewarded members.

This option is in place to avoid time loss for players utilizing multiple characters at the same time.

Leticia will announce the final 10 minutes of the instance in 1 minute increments. When the time ends, all party members will be kicked.

There are no NPC or portals to exit instance. You must Butterfly Wing type item or die / respawn to town.

Note:

• Monsters will not drop any items.
• There are no boss monsters in the instance.
• Monsters per floor are completely random in race / size / elemental property.
• Monsters will also change their natural element through NPC skills such as NPC_CHANGEWATER which will change the element to water.
• All monsters have NPC_RELIEVE_ON which reduces damage taken by a percentage.
• Monsters' name will be based on the current floor such as “Basement Floor 11 Variant” (지하11층 변형체).
• Upon entering Sunken Tower, Leticia will give a hint about which element majority of monsters will choose.
• If it is the party leader's first time, there will be no hint about the elemental changes. (음, 넌 이번이 처음인 것 같은데? 여신의 축복을 받은 기록이 없구나.)

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The rank and difficulty of Sunken Tower scales experience from monsters and dimensional device.

(Need More Information)

Difficulty Level	Experience per Monster		5th Floor Bonus Experience		5th Floor Chance for 1 Meteorite Dust
	Base EXP	Job EXP	Base EXP	Job EXP
1	?	?	?	?	?
2	?	?	?	?	?
3	?	?	?	?	?
4	?	?	?	?	?
5	?	?	?	?	?

Sources:
https://ro.gnjoy.com/news/update/View.asp?seq=264
https://www.inven.co.kr/board/ro/1952/305538
https://www.inven.co.kr/board/ro/1952/305550
https://www.inven.co.kr/board/ro/1952/305553
https://www.inven.co.kr/board/ro/1952/305555
https://www.inven.co.kr/board/ro/1952/305557
https://www.inven.co.kr/board/ro/1952/305561
https://www.inven.co.kr/board/ro/1952/305564
https://www.inven.co.kr/board/ro/1952/305565