How to Get Morveth’s Treasure Gun in Abyss (March 2026) Complete Guide

Updated by Nikhil Desai
February 12, 2026
GamingRoblox

Are you ready to unlock one of the most powerful weapons in Roblox Abyss? Morveth’s Treasure Gun is a game-changing harpoon that can transform your underwater fishing adventures. As someone who has spent countless hours exploring the depths of Abyss, I’m here to guide you through every step of obtaining this incredible weapon.

Quick Overview: Morveth’s Treasure Gun

Stat	Value	Rating
Damage	240	⭐⭐⭐⭐⭐
Cooldown	2.1s	⭐⭐⭐⭐
Control	0.85	⭐⭐⭐⭐
Price	$79,500-$82,500	💰💰💰
Best For	Ancient Sands, Spirit Roots	🎯
Pairs With	Oxy Tube	🔗

What Makes Morveth’s Treasure Gun Special?

Morveth’s Treasure Gun stands out as one of the top-tier weapons in Abyss, offering exceptional value for players transitioning from mid to late game. With its impressive 240 damage output and solid control stats, this weapon can handle most fish you’ll encounter in the Ancient Sands and Spirit Roots biomes. What makes it particularly special is that it’s obtained through an engaging questline rather than just being purchased, making the reward feel much more earned.

Prerequisites: What You Need Before Starting

Before you embark on your quest to find Morveth’s Cave and unlock this treasure, make sure you have:

Required Equipment:

Tube with 100 Oxygen capacity minimum
Max depth of at least 260 meters
At least $79,500 saved up for the final purchase
Basic understanding of fish mutations (you’ll need these for quests!)

Recommended Level:

While there’s no strict level requirement to find the cave, you’ll need to reach specific levels for the quests:

Level 5 for first quest
Level 10 for second quest
Level 15 for third quest
Level 20 for final quest

Step-by-Step: Finding Morveth’s Cave

Navigation from the Dome:

Start at the main dome – This is your central hub in Abyss
Locate the tall seaweed closest to the outside edge of the dome
Position yourself to the right of this seaweed landmark
Swim in a straight line maintaining your position relative to the seaweed
Continue swimming until you reach the edge of the Forgotten Deep Biome
Turn around – You should now be able to spot the cave entrance

Pro Tip: The cave entrance can be tricky to spot at first. Look for a darker area in the rock face with a slightly different texture. It’s not marked on the map, which is why many players miss it!

Inside Morveth’s Cave:

Once you enter the cave, you’ll find Morveth on the left side, surrounded by mysterious stone pillars. These pillars play a crucial role in the questline, so take note of their positions.

Complete Quest Guide: The Four Trials

Morveth will give you four progressively challenging quests. Here’s how to complete each one:

Quest 1: Coral Mutation Challenge

Requirement: Reach Level 5
Task: Catch 2 fish with the Coral Mutation
Reward: Ruby Keystone #1
Tips: Focus on fishing in areas where coral mutations are common. The Ancient Sands biome is particularly good for this.

Quest 2: Metal Mutation Mastery

Requirement: Reach Level 10
Task: Catch 3 fish with the Metal Mutation
Reward: Ruby Keystone #2
Strategy: Metal mutations are rarer, so patience is key. Try different depths and locations to increase your chances.

Quest 3: Albino Mutation Hunt

Requirement: Reach Level 15
Task: Catch 3 fish with the Albino Mutation
Reward: Ruby Keystone #3
Pro Tip: Albino fish are often found in deeper waters. Make sure your tube can handle the depth pressure.

Quest 4: Transparent Mutation Finale

Requirement: Reach Level 20
Task: Catch 4 fish with the Transparent Mutation
Reward: Ruby Keystone #4
Advanced Strategy: Transparent mutations are the rarest of the four. Consider upgrading your equipment before attempting this quest.

Unlocking the Treasure Gun

Once you’ve completed all four quests and collected all four Ruby Keystones:

Return to Morveth’s Cave
Approach the stone pillars surrounding Morveth
Place each Ruby Keystone into its corresponding pillar
Watch the magic happen – A portal will open behind Morveth
Morveth’s Treasure Gun will now be available for purchase

Final Purchase:

Cost: $79,500-$82,500 (prices may vary slightly)
Location: Morveth’s Cave (now with portal active)
Payment: Make sure you have enough cash before returning!

Weapon Analysis: Is It Worth It?

Strengths:

Excellent damage output at 240, rivaling much more expensive weapons
Solid cooldown of 2.1s allows for steady fishing
Good control at 0.85 makes the fishing mini-game manageable
Quest-based unlock adds to the sense of achievement

Limitations:

May struggle with highest-tier fish compared to endgame weapons
Requires significant time investment to complete all quests
Mutation hunting can be frustrating due to RNG elements

Best Use Cases:

Late-game transition (12-20 hours of gameplay)
Ancient Sands and Spirit Roots biomes
Players who’ve completed main story content but aren’t ready for true endgame

Comparison with Other Weapons

Weapon	Damage	Price	Quest Required?
Morveth’s Treasure Gun	240	$79,500	Yes
Lost Spirit Gun	290	$135,000	No
Magroot Gun	190	$47,500	No
Wasted Gun	140	$17,500	No

As you can see, Morveth’s Treasure Gun offers excellent value, sitting between mid-game and true endgame weapons.

Common Mistakes to Avoid

1. Insufficient Tube Preparation

Many players rush to find Morveth’s Cave without proper tube upgrades. Make sure your tube has at least 100 oxygen capacity and 260m depth capability.

2. Ignoring Mutation Knowledge

Not understanding how mutations work can make the questline incredibly frustrating. Spend time learning about different mutation types and where they’re commonly found.

3. Poor Money Management

Don’t spend all your cash before completing the quests. You’ll need around $80,000 for the final purchase.

4. Giving Up Too Early

The mutation-based quests rely heavily on RNG. Some players complete them quickly, while others may take hours. Persistence is key!

Advanced Tips for Speed Completion

Mutation Farming Strategies:

Server hop after catching a mutation fish to reset spawns
Focus on specific biomes known for certain mutations
Play during off-peak hours for better spawn rates
Join community servers where players share mutation locations

Money-Saving Tips:

Complete other quests while hunting mutations to earn extra cash
Sell valuable fish you catch during mutation hunting
Avoid unnecessary upgrades until after you have the treasure gun

Troubleshooting Common Issues

Can’t Find the Cave:

Double-check your navigation from the dome
Make sure you’re looking in the Forgotten Deep Biome area
Try different servers if the cave seems bugged

Mutation Not Counting:

Ensure you’re catching the correct mutation type
Check that the fish was successfully caught (not escaped)
Verify you haven’t already completed that specific quest requirement

Can’t Afford the Gun:

Complete side quests and explore for treasure chests
Sell rare fish you catch during mutation hunting
Consider temporarily using a cheaper weapon while saving up

Community Resources

Official Sources:

Roblox Game Page: Abyss [BETA] – Check for latest updates
Official Discord: Join for community tips and server sharing
Developer Twitter: @FireAtacck for update announcements

Community Help:

Reddit Communities: Share experiences and get help
YouTube Guides: Visual walkthroughs of cave location
Fan Wikis: Additional mutation and location information

Frequently Asked Questions

How long does it take to get Morveth’s Treasure Gun?

On average, players spend 12-20 hours completing all requirements. However, this can vary significantly based on your luck with mutations and previous progress.

Is Morveth’s Treasure Gun better than Lost Spirit Gun?

No, the Lost Spirit Gun (290 damage) is statistically superior, but also much more expensive at $135,000. Morveth’s offers better value for mid-to-late game players.

Can I complete the quests with friends?

Yes! Playing with friends can make mutation hunting more efficient, as you can cover more area and share information about mutation spawns.

What happens if I die during the quests?

Your progress is saved, so don’t worry about dying. However, you’ll lose any fish you were carrying, so try to return to safe areas frequently.

Are the mutation requirements account-wide or character-specific?

The quest progress is character-specific, so each character needs to complete the quests individually.

Final Thoughts

Morveth’s Treasure Gun represents one of the most rewarding weapon acquisitions in Roblox Abyss. While the questline requires patience and dedication, the satisfaction of unlocking this powerful weapon through your own efforts makes it worthwhile.

Remember, the journey to Morveth’s Treasure Gun is as much about exploration and discovery as it is about the destination. Take your time, enjoy the underwater world of Abyss, and don’t be afraid to ask for help from the community.

Ready to start your adventure? Bookmark this guide for quick reference, and share your progress with fellow Abyss explorers. The depths are waiting – will you answer the call?