Sunken Tower

A meteor struck the Endless Tower, sinking its halls beneath the sea. The monsters remain and they’re getting stronger. Leticia needs your party to clear the Sunken Tower before the corruption spreads to the city.

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How to Start:

Step	What to do	Details
1	Form a party	Minimum: 2 members (solo not allowed)
2	Meet Leticia	Map/Coords: alberta 214,74
3	Party Leader talks to Leticia	Only the party leader can create/enter the instance
4	Pick a Mode	EXP Mode or EXP+Coin Mode
5	Pay fee	20,000 Zeny per member

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Requirements & Entry Rules:

Requirement	Value
Base Level	40–99 (bracketed; see below)
Party size	2+ members
Fee	20,000 Zeny per member
Cooldown	72 hours (3 days) per account
Duration	60 minutes (with countdown warnings)
Map	1@ch_u (Memorial Dungeon)

If someone in the party is offline, lacks Zeny, or out of level range; creation fails.

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Level Brackets & Rank:

Your party’s bracket is determined by the leader’s Base Level at creation:

Bracket	Levels	Rank (internal)
A	40–59	0
B	60–79	1
C	80–99	2

This rank affects monster stats, EXP, coin rates, and scaling.

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Modes:

Mode	What you get
EXP Mode	Experience rewards only
EXP + Coin Mode	Experience rewards plus a chance to earn Event Costume Coins per 5th floor clear

You select the mode during creation. (EXP is always awarded; Coin is added if chosen.)

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Difficulty (inside the instance):

Talk to Leticia inside (1@ch_u 8,55) to change difficulty at any time:

Difficulty	Cost to change	Effects
1–5	1 × Sunken Tower Ticket per change	More & tougher mobs, higher EXP & coin potential

If you pick the same difficulty you’re already on, the change is rejected without consuming a ticket.

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Instance Flow:

• Up to 150 floors, repeating a 5-floor cycle of spawn areas.

• On each floor start, Leticia announces buffs/theme (random element influences the run).

• Each floor spawns 20 + (5 × Difficulty) randomized mobs from a large pool.

• Every 5th floor (i.e., when floor % 5 == 4) you can claim rewards before proceeding.

Party leader uses any Dimensional Portal to advance when the floor is clear.

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Rewards (every 5 floors):

Reward Type	How it works
Base EXP / Job EXP	Awarded to each member who claims on the 5th floor
Event Costume Coins	Chance per claim in EXP+Coin Mode only

Coin chance & amount scale with Rank and Difficulty:

• Coin drop chance (%): 15 + (5 × Rank) + (5 × (Difficulty − 1))

• Coin amount: random between 5 + 3 × (Difficulty − 1) and 7 + 3 × (Difficulty − 1)

The instance tracks how many party members have claimed (to avoid leaving people behind). The leader can force-advance (skips unclaimed rewards).

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Scaling Snapshot (what increases with Rank/Difficulty):

• Monster Stats: HP/ATK/HIT scale with Rank & Difficulty; random Size, Race, and Element per spawn keep fights varied.

• EXP:

  • Bonus EXP: increases with Rank; further boosted by Difficulty

  • Mob EXP & Job EXP: scale similarly; Job = 80% of Mob

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