Whole Cake Island turns Grand Piece Online’s Second Sea into a compact loop of puzzles, boss rushes, and server-wide events. It is the main way to reach Big Mama, Juice Empress, and the Mochi Emperor, and it layers in XP and drop-rate bonuses through activities like Chocolate Marshmallows and Capture the Flag.
Whole Cake Island location and requirements
Whole Cake Island sits in the Second Sea and is recommended for players around level 675. It is reachable once you have access to Second Sea through Reverse Mountain.
From Rovo Island, the Second Sea starter island, sail in a southwest direction for roughly 30–40 seconds. The island lies between Reverse Mountain and the Rough Waters. The landmass is large and visually distinct, so it is difficult to overshoot once you are moving on that heading.
The island itself is built around a few key landmarks: a dock with spawn and navigation utilities, a fishing spot, a cafe hub, a Colosseum for structured PvP, and the central Whole Cake Tower that anchors most of the high-value content.
Whole Cake Tower overview and flow
The Whole Cake Tower is a five-floor in-server raid. Three floors are puzzle rooms, and two are boss encounters. Clearing all five in sequence unlocks the Mirror World entrance elsewhere on the island, where the Mochi Emperor waits as a separate boss.
Every floor can be done solo or with others in the same server instance, and clearing floors grants cosmetic titles. After all five floors and the Mirror World are cleared, the tower goes on a short cooldown before it can be attempted again.
Floor 1: Cake stacking puzzle
The first floor is a pattern-recognition and ordering puzzle built around feeding Big Mom the cakes she demands. The room is filled with multi-layer cake pieces in different colors.
Mechanic: Big Mom calls out a specific flavor. Each flavor is represented by a color set, and each cake has three layers scattered around the room. You must assemble the correct three-layer cake at the pedestal in front of her in the proper order: largest base layer first, medium center, and smallest top.
The sequence plays out as follows:
- Strawberry Cake – Stack the three pink layers: bottom, middle, then top. If the cake is assembled correctly, it disappears and Big Mom immediately requests the next flavor.
- Mocha Cake – Repeat the stacking pattern with the green-colored layers placed around the lobby.
- Cookies & Cream – Finish by stacking the white-and-brown cake pieces, again from largest to smallest.
Completing all requested cakes opens the door to Floor 2 and can award a themed title for the baking mini-game.
Floor 2: Color portal maze
The second floor reduces the challenge to a simple rule: step through the door whose color matches the active clue in the room.
Mechanic: Each chamber contains multiple book-shaped doorways, each glowing with a different color. A single detail in the room indicates the correct choice. Most of the time, this is the color of the candles, but the clue can also be the color of the floor, a tombstone, or another highlighted object.
Walk into the portal whose glow matches the current clue color to progress. Picking the wrong portal sends you back, while consistently choosing the correct door chains you through a short sequence of rooms and into Floor 3. Like Floor 1, clearing the maze awards a cosmetic title.
Floor 3: Sunflower memory game
Floor 3 turns the tower into a memory test around a central tree and color-coded sunflowers.
Mechanic: Colored orbs orbit the tree in a specific sequence. Around the edge of the arena, several sunflowers are each associated with a color. The orbs flash in a pattern that you must repeat by touching the sunflowers in the same order.
For example, if the orbs display a sequence such as Red, White, Red, Purple, you need to:
- Touch the red sunflower.
- Touch the white sunflower.
- Touch red again.
- Finish with the purple sunflower.
The pattern length increases with each round while preserving the earlier inputs, following a “Simon Says” style of escalation. After completing enough sequences, the exit unlocks, and another tower title is granted.
Floor 4: Juice Empress boss fight and drops
Floor 4 introduces the first combat-heavy encounter in the tower, a multi-wave fight culminating in the Juice Empress.
Encounter flow: The room initially spawns several waves of minor enemies. These have basic attack patterns and are intended to be cleared quickly. Once the waves are defeated, the Juice Empress herself enters, wielding sword-based attacks with relatively high health.
Defeating the Juice Empress grants a chance at the following drops:
| Item | Drop chance | Type |
|---|---|---|
| Juice Empress's Cape | 6% | Back accessory |
| Juice Empress's Helmet | 6% | Headgear |
| Juice Empress's Outfit | 3% | Armor/cosmetic set |
| Helix Skewer | 2% | Weapon |
The Juice Empress fight is designed to be manageable compared to the tower’s final bosses, but still benefits from coordinated play if you want to farm the rarer items efficiently.
Floor 5: Big Mama boss fight and drops
The final tower floor pits you against Big Mama, the central boss for Whole Cake Island content. Her move set is punishing, with large hitboxes and strong crowd-control abilities, and she can quickly overwhelm solo players.
Encounter profile: Big Mama’s attacks chain together with minimal downtime and include powerful knockbacks that can throw players across the arena. In high-population runs, securing enough contribution for personal drop credit can be challenging, since up to dozens of players may be attacking simultaneously.
Big Mama has the following drop table:
| Item | Drop chance | Notes |
|---|---|---|
| Big Mama’s Outfit (Female) | 4% | Female variant costume |
| Big Mama’s Outfit (Male) | 4% | Male variant costume |
| Big Mama’s Hat | 4% | Head accessory |
| Big Mama’s Cape | 4% | Cape/back accessory |
| Soul Cleaver | 0.1% | Extremely rare sword |
Given the low 0.1 percent chance on Soul Cleaver, most players treat Big Mama as a long-term farm. Coordinated groups, private servers focused on tower runs, and high-damage builds all help make that grind more realistic.
Clearing this floor teleports you to the top of the tower and marks your log pose with a route to the Mirror World entrance.
Mirror World and Mochi Emperor drops
Once Big Mama is defeated and the tower run is complete, a large mirror becomes accessible elsewhere on Whole Cake Island. A zip line leads down from the tower area toward this mirror. Walking through it sends you into the Mirror World, a separate arena themed around the Mochi Emperor fight.
Encounter profile: The Mochi Emperor is designed as a high-damage boss with multiple phases. He uses mochi-based ranged attacks, turrets, crowd-control abilities, and a Conqueror’s Haki-style burst around a low-health threshold. At certain points, he becomes difficult or inefficient to attack, so survival and timing are more important than constant aggression.
The Mochi Emperor drops:
| Item | Drop chance | Type |
|---|---|---|
| Mochi Emperor’s Outfit | 4% | Armor/cosmetic set |
| Mochi Emperor’s Scarf | 4% | Neck accessory |
| Mochi Trident | 1% | Weapon |
Like Big Mama, the Mochi Emperor is balanced around group play. His attacks have very low start-up and end lag, which makes traditional melee combos unreliable and pushes players toward ranged zoning, block-breaking, and hit-and-run tactics.
Recommended builds and team setup for Whole Cake content
Whole Cake Island’s boss fights reward mobility, ranged pressure, and damage over pure tank gameplay. Several Devil Fruits and fighting styles fit particularly well.
- Mochi provides strong ranged options and synergizes directly with Mochi Trident, extending the reach of thrown skills and allowing certain impale-style moves to hit multiple targets.
- Pika offers high mobility and fast, precise ranged attacks that are effective for staying safe while contributing damage during chaotic multi-player fights.
- Buddha excels in durability and presence, helping you survive Big Mama and Mochi Emperor’s AoE-heavy phases and anchor groups that lack defensive tools.
- 3SS and Electro are recommended fighting styles for melee-focused builds, bringing reliable damage and utility when fruit moves are on cooldown.
- Golden Staff and Gravity Blade are standout sword options that pair well with these styles, supplying good reach and scaling.
Regardless of build, most players benefit from running Whole Cake content with at least a small coordinated squad. Solo attempts on Big Mama and the Mochi Emperor are possible but significantly more demanding and inefficient for farming rare drops.
Chocolate Marshmallow mini-game and global buffs
The Chocolate Marshmallow event transforms Whole Cake Island into a shared, server-wide progression bar for temporary buffs.
Mechanic: A flowing chocolate river near the island’s central area periodically spawns marshmallow pickups. Players can grab a marshmallow and stack it onto a towering chocolate fountain. Once the fountain reaches the required stack count for that server, Big Mama appears and consumes the entire stack, triggering rewards for everyone who contributed.
Each successful event grants:
- 15 minutes of 2x drop rate.
- 15 minutes of 2x XP.
- A 1 percent chance to receive a random Devil Fruit.
There is a 15-minute global cooldown per server between events, and server hopping does not bypass this timer. Every server has its own required number of marshmallows per event, and only players with PvP pads disabled and ability cooldowns cleared are eligible to choose their rewards.
The buffs from Chocolate Marshmallows are valuable for stacking with tower or Mirror World runs, particularly if you are targeting low-percentage weapons like Soul Cleaver or Mochi Trident.
Capture the Flag and infamy gains
Beyond the tower and Mirror World, Whole Cake Island adds a Capture the Flag mode in an open arena area. This activity is tuned more for PvP and infamy farming than for gear hunting.
Mechanic: Players contest control of flags in a large combat zone. Holding objectives yields an infamy multiplier, with Whole Cake’s implementation granting approximately a 1.75x bonus. This makes the island one of the strongest locations for pushing infamy when events are active, and the player population is healthy.
Spawn points across the docks, fishing spot, and nearby hubs reduce downtime between matches and allow quick transitions between PvP, PvE tower runs, and events.
Quick FAQ for Whole Cake Island
Where is Whole Cake Island?
Whole Cake Island is part of the Second Sea and is reachable once you can sail past Reverse Mountain. From Rovo Island, sail southwest for roughly half a minute; the island lies between Reverse Mountain and the Rough Waters.
What level should I be?
The content is tuned for players around level 675. Tower puzzles are mechanically simple at lower levels, but the boss encounters and Mirror World become substantially more manageable once you reach that range.
What are the key landmarks?
The island centers around the dock, fishing spot, cafe, Whole Cake Tower, a dedicated Colosseum, and the mirror spawn area for the Mochi Emperor. These locations loop cleanly into one another, letting you alternate between progression, PvP, boss farming, and server events without leaving the island.
Used together, the tower, Mirror World, Chocolate Marshmallows, and Capture the Flag transform Whole Cake into a self-contained endgame circuit: puzzles and bosses for gear, server events for buffs, and PvP zones for infamy, all within a short sail of the Second Sea’s starting point.
