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Infinite Tower

Tower Island endgame mode with scaling floors, stacking debuffs, direct floor rewards, Tower Tokens, and a backup shop.

Systems Verified
Island Tower Island
Unlock level 8,500+
Entry item Tower Key
Shop currency Tower Tokens
Secret runes Radiant Rune, Primordial Rune
Full upgrade cost 36,500 Tower Tokens
Secret pity ladder Radiant 6,000 floors, Primordial 7,500 floors
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Calculator

Plan the grind before you farm

Open Grinding Time Calculator Estimate Tower Token farming time from your average tower session length and token payout.
Overview

Infinite Tower

  • Infinite Tower is a system guide in Sailor Piece.
  • Boss checkpoints appear every 5 floors, random bosses such as Madoka and Dragon Slayer/Ragna can appear, and debuffs stack harder after floor 50 and floor 100.
Section

How to enter Infinite Tower

  • Travel to Tower Island through a portal.
  • Make sure you are above level 8,500.
  • Bring a Tower Key item icon in Sailor PieceTower Key and talk to the Infinite Tower NPC.
  • Spawn the portal and enter to begin the run.
Section

How Infinite Tower works

RuleDetails
Core loopClear floors, survive waves, and defeat bosses
Floor rewardsRuns can pay rerolls and other reward items directly, while Tower Tokens are earned alongside them during the same climb
Reward scalingPublic guides confirm every cleared level gives Tower Tokens and the payout depends on how far the run goes, but they do not publish an exact floor-by-floor token table yet
Boss checkpointsEvery 5 floors you hit a boss that acts as a checkpoint and a major reward point
Boss rhythmA boss appears every 5 floors
DebuffsYou get one random debuff per floor
Debuff scalingAbove floor 50 you face 2 debuffs at once
Late scalingAfter floor 100 you face 3 debuffs at once
Section

Current random tower boss notes

  • Madoka and Dragon Slayer/Ragna can appear as random bosses in Infinite Tower or Boss Rush.
  • Their HP scales with the tower floor or Boss Rush wave instead of using one fixed island-boss HP value.
  • Abyssal Empress and Abyssal Outfit are not tied to Madoka or Dragon Slayer/Ragna specifically; any boss that spawns in Infinite Tower can roll them, with chance based on floor.
Section

How to grind Infinite Tower

  • Use a damage build, not a luck build, when you are grinding Infinite Tower because faster clears and deeper floors matter more than squeezing out extra luck if you want more floor rewards, better rune odds, and a steadier reroll loop.
  • The easiest AFK setup is a large AoE autocast move that can keep clearing waves by itself, with Gilgamesh V move being one of the clearest examples if your account has it.
  • First, go into the tower settings and set auto-reset around floor 5 to 10 so the run loops back to floor 0 and starts over by itself while you test your setup.
  • After the loop looks stable, tick the auto-restart box too. Auto-restart is the retry prompt you get after dying, where the game asks if you want to start the tower again from floor 1 instead of kicking you out.
  • Once both settings are working correctly, raise the auto-reset target back up to around floor 50 to 70 depending on how strong your build is and let the tower keep running on its own.
  • If the run slows down or starts dying before the target floor, lower the reset point again until the loop is consistent instead of forcing a weaker luck setup.
Section

Published reward scaling notes

  • Beebom says every cleared level in Infinite Tower gives Tower Token item icon in Sailor PieceTower Tokens , and the token amount depends on how far the run goes.
  • The same guide says tower runs directly reward money, XP, gems, Race Reroll item icon in Sailor PieceRace Rerolls , Trait Reroll item icon in Sailor PieceTrait Rerolls , Clan Reroll item icon in Sailor PieceClan Rerolls , and a low chance at Tower Shop items.
  • Beebom also says every 5 floors you hit a boss checkpoint that acts as a major reward source .
  • Current public guides still do not publish an exact floor-by-floor Tower Token item icon in Sailor PieceTower Token or Clan Reroll item icon in Sailor PieceClan Reroll payout table, so this page avoids inventing one.
Section

Tower Key farming

LocationEnemy groupPublished note
Ninja IslandNinjasOne of the two tracked Tower Key mob routes
Lawless IslandArena FightersThe other main published Tower Key route and one of the easiest AoE farm spots
Section

Secret runes from Infinite Tower

RuneFloor rangeBase drop %Max drop %2x Drop base %2x Drop max %
Radiant Rune rune icon in Sailor PieceRadiant RuneLow floor0.00250%0.0084%0.00500%0.01688%
Radiant Rune rune icon in Sailor PieceRadiant RuneHigh floor0.01350%0.0458%0.02700%0.09113%
Primordial Rune rune icon in Sailor PiecePrimordial RuneLow floor0.00200%0.0068%0.00400%0.01350%
Primordial Rune rune icon in Sailor PiecePrimordial RuneHigh floor0.01300%0.0439%0.02600%0.08775%
Section

Secret rune notes

  • Radiant Rune is the main Infinite Tower chase rune for luck-focused farming builds.
  • Primordial Rune is the main Infinite Tower chase rune for pure damage and top-end DPS builds.
  • Both secret runes are tied to Infinite Tower rather than the normal Rune Dungeon pool.
  • Higher floors have much better published odds than low-floor farming, and the 2x Drop gamepass boosts both the base and max listed rates shown on the page.
  • Secret-rune pity increases by +1 per cleared floor, with Radiant guaranteed at 6,000 floors and Primordial guaranteed at 7,500 floors.
  • Secret rune pity is not visible in game, so track floors manually if you are chasing a guarantee.
  • Radiant Rune and Primordial Rune do not share pity, so progress on one secret rune does not interfere with the other.
Section

Infinite Tower upgrade costs

UpgradeLevel 1Level 2Level 3Level 4Level 5Total
Damage7501,0001,2501,7502,5007,250
Critical Damage7501,0001,2501,7502,5007,250
Critical Chance7501,0001,2501,7502,5007,250
HP5006508501,1501,5004,650
Luck1,0001,3501,7502,5003,50010,100
Section

Permanent Tower upgrade bonuses

UpgradeMax bonusPer-level gainTotal cost
Damage+25%+5% per level7,250 Tower Tokens
Critical Damage+15%+3% per level7,250 Tower Tokens
Critical Chance+5%+1% per level7,250 Tower Tokens
HP+37.5%+7.5% per level4,650 Tower Tokens
Luck+15%+3% per level10,100 Tower Tokens
Full treeAll five stats maxed5 upgrade lines total36,500 Tower Tokens
Section

Best published rewards

  • Abyssal Empress is one of the main reasons players grind this mode.
  • Abyssal Outfit and Purple Flare Aura are the most visible shop-exclusive cosmetics tied to the tower grind.
  • Abyssal Empress and Abyssal Outfit can roll from any boss that spawns in Infinite Tower, with reward chance scaling by floor.
  • The mode also pays money, XP, gems, rerolls, and a low chance at direct shop items from the tower itself.
  • Permanent Infinite Tower upgrades now have screenshot-confirmed token ladders for Damage, Critical Damage, Critical Chance, HP, and Luck, so you can plan the full 36,500-token investment more accurately.
Tracker

Infinite Tower progress tracker

Track your Tower Tokens, current permanent stat levels, and the exact token wall still left before Infinite Tower is fully maxed.