Fisch Obelisk Puzzle: Unlock Tidefall Castle

Fisch Obelisk Puzzle: Unlock Tidefall Castle

Learn how to complete the Fisch Tidefall Obelisk puzzle to unlock Tidefall Castle, catch the Plesiosaur, and progress toward the Requiem Rod.

Eliza Crichton-Stuart

Eliza Crichton-Stuart

Updated Jan 18, 2026

Fisch Obelisk Puzzle: Unlock Tidefall Castle

The Fisch Tidefall update introduces a series of Obelisk puzzles that unlock a hidden path inside Tidefall Castle. Each Obelisk requires players to gather specific hunt exotic fish or items from the surrounding Tidefall area. Completing all Obelisks opens the castle gate, allowing access to rare creatures such as the Plesiosaur, which is essential for progressing toward the Requiem Rod. Understanding the locations and requirements of each Obelisk is crucial for successfully navigating this update.

Understanding the Obelisk Puzzle Mechanics

In the Fisch Tidefall area, five Obelisks are scattered across key locations, each requiring a unique exotic fish or item. Players need to catch or collect these items and submit them to the corresponding Obelisk. The Gold Obelisk is located at the Collapsed Ruins and requires the Goldwraith, an exotic fish found in the Crowned Ruins. The Purple Obelisk, positioned opposite the shop in Tidefall, requires the Omnithal, an exotic from the Sunken Reliquary. 

Behind the shop, the Red/Orange Obelisk demands the Pliosaur, which can be collected from the Collapsed Ruins. The Sky Blue Obelisk, found near the bridge opposite the waterfall, needs the Reef Titan from Coral Bastion. Finally, the White Obelisk, to the left of the Tidefall waterfall, requires the Sparkling Dripstone, which is considered a trash item from the Tidefall bestiary. Submitting all required items completes the puzzle and unlocks the castle path.

Reaching and Entering Tidefall Castle

Once the Obelisk puzzle is completed, players can move toward the lush green-covered area in Tidefall and glide over the water to reach Tidefall Castle. The castle gate, previously locked, becomes accessible after solving the puzzle. Inside, players can encounter the Plesiosaur, a divine secret rarity. Spawning the Plesiosaur may require repeated use of the totem, as it has a longer respawn time. Capturing this creature is essential for crafting the Requiem Rod, making it a central objective for those progressing through the Fisch Tidefall update.

Why Completing the Puzzle Matters

Solving the Obelisk puzzle is not only a gateway to Tidefall Castle but also an essential step in obtaining rare creatures required for progression. The Plesiosaur can be hunted both during the normal hunt and after unlocking the castle, but access to the inner area ensures a more reliable encounter. Completing the puzzle also encourages players to explore the Tidefall environment thoroughly, collecting exotic fish and interacting with the area’s unique features.

Check out Roblox Gift Cards on Amazon here.

Learn about other popular Roblox experiences here:

Grow a Garden

Plants vs Brainrots

Steal a Brainrot

99 Nights in the Forest

Endless Horde

Blade x Zombies

Frequently Asked Questions (FAQs)

What is the Obelisk puzzle in Fisch Tidefall?
The Obelisk puzzle is a series of five Obelisks in the Tidefall area, each requiring a specific exotic fish or item to complete. Solving all five unlocks a hidden path to Tidefall Castle.

Where are all the Obelisks located?
The Gold Obelisk is in the Collapsed Ruins, the Purple Obelisk is opposite the shop in Tidefall, the Red/Orange Obelisk is behind the shop, the Sky Blue Obelisk is near the bridge opposite the waterfall, and the White Obelisk is left of the Tidefall waterfall.

Do I need the Plesiosaur to complete the puzzle?
Yes, the Pliosaur is required for the Red/Orange Obelisk. The Plesiosaur, however, becomes available inside Tidefall Castle after completing the puzzle.

Can I catch the Plesiosaur outside of the castle?
The Plesiosaur can spawn during hunts, but it is considered a divine secret rarity. Unlocking the castle gate provides a more reliable opportunity to encounter it.

Why is completing the Obelisk puzzle important?
Completing the puzzle unlocks the inner area of Tidefall Castle, allows access to rare creatures like the Plesiosaur, and is necessary for crafting the Requiem Rod.

Game Updates

updated

January 18th 2026

posted

January 18th 2026

Leaderboard

View All

Streaming