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What you need before entering Morveth’s Cave
Two guides published in February 2026 recommend a tube with at least 100 oxygen capacity and a maximum depth of 260 meters for the route. These are in-game equipment requirements, not real-world diving specifications. The figures come from third-party guides and have not been confirmed here against live gameplay, so check your equipment and the route in-game if an update has changed them.
How to find Morveth
- From the main spawn, head toward the leaderboards.
- Enter the ocean to the right of the leaderboards and swim straight, keeping the submarine on your left as you pass it.
- Continue to the edge of the Forgotten Deep. When the on-screen location changes to “Ocean,” descend to about 260 meters.
- Pass through the underwater waterfall. Once inside the cave, go straight and turn left to reach Morveth.
Complete Morveth’s four quests
Morveth’s quest chain combines a level gate with a specific number of fish carrying the required mutation. The two guides report one Ruby Rune as the reward for each completed quest.
| Quest | Level required | Fish to catch | Reported reward |
|---|---|---|---|
| 1 | 5 | 2 Coral-mutated fish | 1 Ruby Rune |
| 2 | 10 | 3 Metal-mutated fish | 1 Ruby Rune |
| 3 | 15 | 3 Albino-mutated fish | 1 Ruby Rune |
| 4 | 20 | 4 Transparent-mutated fish | 1 Ruby Rune |
Do not treat the level milestones and fish catches as interchangeable: each quest calls for both its level requirement and its listed catches. The Transparent-mutated fish objective is described by the guides as difficult, but they do not provide a verified drop rate.
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Use the four Ruby Runes to activate the monoliths
- Return to Morveth after completing all four quests and collecting all four Ruby Runes.
- Place one Ruby Rune in each of the four smaller monoliths surrounding the central monolith.
- Once all four surrounding monoliths are active, interact with the central monolith to unlock the gun for purchase.
Completing the quests alone does not finish the unlock: you must place the runes before the purchase becomes available.
Buy the gun and confirm the badge
The guides list Morveth’s Treasure Gun at 82,500 in-game currency. After the central monolith unlocks it, purchase the gun to receive the Morveth’s Treasure badge, according to those guides. To check whether the badge was awarded, look on your Roblox profile or in Abyss’s in-game achievement menu.
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The same guides report the gun’s stats as 240 damage, a 2.1-second cooldown, and 0.85 control. These figures, like the route depth, equipment thresholds, and price, are guide-reported and may change with game updates; they are not independently verified live-game data.
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- This is a digital gift card that can only be redeemed for Robux at Roblox.com/redeem. It cannot be redeemed in the Roblox mobile app or any video game console. Please allow up to 5 minutes for your balance to be updated after redeeming.
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- This is a digital gift card that can only be redeemed for Robux at Roblox.com/redeem. It cannot be redeemed in the Roblox mobile app or any video game console. Please allow up to 5 minutes for your balance to be updated after redeeming.
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- Every Roblox Gift Card grants a free virtual item upon redemption.
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