The latest update in Fish It introduced something that immediately caught the community’s attention: a locked secret door hidden inside the Esoteric area. Many players have already found it, but not everyone understands how to open it. If you want to access this mysterious location before future content drops, you need to follow a specific progression path. This guide explains where to find the door, how to get the required item, and what might be waiting behind it. Also check out our Fish It Codes for more rewards!
Where Is the Secret Door Located?
The secret door is located on Esoteric Island. Here is how to find it:
- Travel to the Esoteric island.
- Explore the area carefully until you spot a large, ancient-style gate.
- The design stands out clearly compared to surrounding structures.
- The gate is locked and cannot be opened without a special item.
You cannot interact with it normally. To unlock the entrance, you must obtain a key item called the Ruin Key. Without this item, access is completely blocked.
How to Get the Ruin Key
The Ruin Key is tied to your Index progression. That means you must focus on collecting and completing as many fish entries as possible. Follow these steps:
- Open your Index menu.
- Identify missing fish entries.
- Catch fish from different regions to fill gaps.
- Reach the required milestone reward.
- Once the milestone is achieved, you will receive the Ruin Key.
You do not always need a 100% completed Index, but you must reach the specific reward threshold that grants the key. Several players reported they only had a few fish left before unlocking it. The more complete your Index, the closer you are to unlocking the Esoteric secret door.
Fastest Way to Complete the Index
If you want to speed up your progress, here are some practical strategies:
1. Fish in Active Zones
Fishing in areas with multiple players can provide additional luck bonuses. This improves your chances of catching rare fish needed for Index completion.
2. Use the Right Enchants
Recent enchants can increase drop chances or improve event-related catches. Choose enhancements that boost luck or rarity rates.
3. Target Missing Entries Only
Instead of fishing randomly, check your Index and focus only on regions where entries are still incomplete. This saves time and increases efficiency.
What Is Behind the Secret Door?
At the moment, the full content behind the door has not been officially revealed. Some players attempted to look inside using free camera tools and reported an empty space.
This strongly suggests the area is being prepared for future content, which may include:
- New rarity tiers
- Secret fish
- Endgame content
- Limited-time events
Because of this, the Ruin Key could become extremely important for upcoming updates. Unlocking the door early may give players a head start once new content goes live.
Do You Need a Full Index?
- Not necessarily.
You only need to reach the milestone that rewards the Ruin Key. However, aiming for near-complete progression is recommended to avoid missing future content tied to collection progress. Opening the Esoteric secret door in Fish It is directly connected to your Index progression. The steps are simple but require dedication:
- Complete as much of the Index as possible
- Earn the Ruin Key milestone reward
- Return to Esoteric and unlock the gate
This update shifts the focus toward collection progress more than ever before. If you want to stay ahead and prepare for potential endgame content, now is the time to optimize your farming strategy and finish your Index. The door is clearly more than decoration. It likely serves as the entrance to a major expansion, and players who prepare early will be in the best position when the next update arrives in Fish It.