The complete list of all new working codes for the FISCH Luminescent Cavern update. Get free rewards, cash, and boosts to explore the Crimson Cavern and find the Boom Ball!
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The wait is finally over! The massive Luminescent Cavern update has just dropped in FISCH, and it’s packed with new areas to explore, secrets to uncover, and powerful gear to obtain. This huge content release challenges players to venture into the Desolate Deep, collect mysterious Keystones, and unlock the path to the brand-new Crimson Cavern.
To celebrate this massive launch and help every player get a head start, the developers have released a fresh batch of working codes for September 2025. This guide will provide you with all the active codes and explain the best way to use their rewards to conquer the new update.
What’s New in the Luminescent Cavern Update?
For those just diving in, this update is one of the most significant in the game’s history. It’s a multi-layered adventure that begins where the old world ends.
- A New Realm to Discover: The journey starts in the Desolate Deep, where a new path has opened. This leads players on a quest to unlock the Mysterious River, and beyond it, the beautiful but dangerous Luminescent Cavern and the even more formidable Crimson Cavern.
- The Keystone Hunt: Access to these new areas is locked behind a unique puzzle. Players must find several Keystones that are unique to them, with each one found at its corresponding island on the world map.
- New Quests and Secret Gear: The update includes a new quest to find and return the King’s Crown for a special reward. Additionally, a powerful new item called the Boom Ball has been added, obtainable only through a secret method.
For a full walkthrough on how to unlock these new areas, be sure to check out our in-depth guide to the Secret Caves.
All Working FISCH Codes (September 2025)
To get a massive head start in the new update, you’ll want to redeem these codes as soon as possible. The rewards they provide can significantly speed up your progress.
How to Redeem Codes
Redeeming codes in FISCH is a simple process. Just follow these steps:
- Launch the game.
- Open the in-game Menu.
- Scroll all the way down to the bottom where you will find the code redemption box.
- Carefully type in a code from the list below and hit redeem to claim your free rewards!
Active Codes List
Here are all the currently active and working codes for the Luminescent Cavern update:
snowburrow– Redeem this code for 25,000 Cash and a 30-Minute Luck Boost.temporarysubmarine– Redeem this code for a free temporary Submarine boat skin that lasts for 24 hours.meteor– Redeem this code for 5 free Enchant Relics and 50,000 XP.fishfest– Redeem this code for 10,000 Cash and 10 of each common bait type.
Expired Codes
These codes are no longer working and cannot be redeemed.
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How to Use Your Code Rewards Effectively
The items from these codes aren’t just free loot; they are strategic tools that can give you a significant advantage in the new update.
- Fund Your Quests: The 35,000 Cash from the
snowburrowandfishfestcodes is a great starting fund for the expensive Appraise system, which is required to get the Crimson Mutation needed to unlock the Crimson Cavern. - Boost Your Luck: Use the 30-Minute Luck Boost from
snowburrowright when you enter the new Luminescent or Crimson Caverns. This will dramatically increase your chances of catching the rare fish required for the new Bestiaries. - Accelerate Your Progress: The 50,000 XP from the
meteorcode will give you a nice boost, and the 5 Enchant Relics are invaluable. These can be used to unlock the secret maze inside The Depths or to enchant the powerful new rods you’ll discover. - Stock Up on Bait: The free bait from
fishfestensures you’re ready to start fishing in the new zones immediately without having to return to a vendor.
This update offers a ton of new content for dedicated players to sink their hooks into. Redeeming these codes is the best way to start your adventure on the right foot. For more free rewards in other games, check out our comprehensive Roblox codes page.
