Steal an Egg Tidal Surge Event: 5 Pets & Odds (2026)

The Steal an Egg Tidal Surge (officially the Alien Tidal Surge) is a random night event that floods the entire Alien Planet and swaps in five exclusive pets, including a brand-new Divine called Prismare. Each night carries roughly a 10% chance of a surge, and the flood lasts only until the next egg reset, about five minutes. It happens in every server at once, and it only affects the Alien Planet, not the rest of the map.

That’s the short version. The rest of this guide covers the odds for every flooded pet, the real math behind chasing Prismare, and what players still can’t confirm.

Alien Tidal Surge at a Glance

Detail	What We Know (Update 12)
Added in	Update 12, November 7, 2026
Where it happens	Alien Planet only
Trigger	About 10% chance each night
Duration	Until the next egg reset (about 5 minutes in tested captures)
Exclusive pets	5, including the Divine Prismare
Speed needed	250B to enter the biome and steal eggs
Codes	None. Steal an Egg has no code box, so “surge codes” are fake

What Actually Happens When a Tidal Surge Hits?

The whole biome floods and turns into an underwater version of itself. Flooded eggs spawn in the water, and the Alien egg you pull out while fishing becomes a flooded egg instead of a normal one.

Normal Alien Planet eggs stop being the only game in town. For a few minutes, the pet pool changes completely.

It arrives with Update 12, the update that followed the UFO Invasion event. If you haven’t opened the area yet, our walkthrough of the Alien Biome covers the Speed gate and the Ferryman’s quest.

How Often Does the Tidal Surge Happen?

Here’s the part most guides skip. Tracked in-game data puts the chance at 10% per night, and it is not a guaranteed timer. You can go many nights without one.

Treating each night as an independent 10% roll, the odds of seeing at least one surge stack up like this:

Nights Waited	Chance of At Least One Surge
1	10%
3	27%
7	52%
10	65%
14	77%

So after ten nights, you still have about a one-in-three chance of having seen nothing. That’s why the surge feels random. It is.

Because the flood hits every server together, you don’t need to hunt for a lucky lobby. You need to be standing in the biome, ready to move, when the alert fires. A live tracker such as eggPing shows when a surge is active and how long is left.

All 5 Tidal Surge Pets: Odds and Income

These are the five flooded-pool pets. The percentages are per flooded egg, and the income figures are community-tracked base income, since there’s no official value list.

Pet	Rarity	Chance per Flooded Egg	Base Income
Jellynova	Cosmic	73%	$100M/s
Flarefish	Cosmic	20%	$300M/s
Tideler	Secret	5%	$2.8B/s
Abyssjaw	Eternal	1.9%	$5B/s
Prismare	Divine	0.1%	$20B/s

Jellynova is the default result by a mile. Tideler is the first real jump in value, and Prismare sits near the top of community income lists at $20B/s, which is why everyone talks about it.

One flag before you plan around the table: some early guides disagreed on Flarefish’s rarity tier, and a few didn’t list it at all. The odds above come from in-game captures checked on November 8, but treat Flarefish’s label as the least certain row.

Does the Tidal Surge Reach the Alien Lagoon?

No. The surge floods the Alien Planet itself, and the Alien Lagoon area is not part of it. Players often mix this up with the Nebuloth Kraken event, which runs separately in the Lagoon every 30 minutes with a shared pool of 750 Krakens.

Two different events. Two different places. Don’t stand in the Lagoon waiting for a flood.

How to Farm a Tidal Surge (Step by Step)

A five-minute window punishes slow starts. This is the order that wastes the least time:

1. Hit 250B Speed first. Bigger eggs slow you down on the run home, so build a cushion above the minimum before you farm.
2. Finish the Ferryman’s quest. You need his Alien Rod and the 20-catch task done before you can fish.
3. Park inside the Alien Planet at night and keep your rod equipped.
4. When the flood starts, grab flooded eggs on the ground first. They’re limited and they disappear at the reset.
5. Fish in whatever time is left. In normal play, about 28% of catches in the biome are an Alien egg, and during a surge that egg is a flooded egg.
6. Hatch and check. The reset ends the flood whether you’re ready or not.

For rods, milestone rewards and the full loot table, see our fishing guide. A single cast in the biome can return Void Pearls (5 to 11, about 62% of the time), an Alien egg (28%), a Dark Matter mutation (8%) or a relic (2%).

What Are Your Real Odds of Getting Prismare?

Honest answer: low. At 0.1% per flooded egg, Prismare is a long-game target. Using simple probability, this is how many flooded eggs you’d need to open:

Target Pet	Chance per Egg	Eggs for a 50% Shot	Eggs for a 90% Shot
Tideler	5%	14	45
Abyssjaw	1.9%	37	120
Prismare	0.1%	693	2,300

These figures are our own calculation from the published odds, assuming each egg rolls independently. They’re a planning guide, not a promise.

Now put that next to reality. A surge gives you roughly five flooded eggs on the ground plus whatever you fish up in about five minutes. Even a perfect surge only buys you around a 0.5% shot at Prismare. Plan on many surges, not one.

Can You Get Surge Pets Without Waiting for a Flood?

Partly, yes. Two of the five have a fishing-milestone backup:

• Jellynova: reward at 1,500 catches
• Abyssjaw: the Abyssjaw Egg arrives at 5,000 catches, alongside the Kraken Rod

That makes Abyssjaw the realistic Eternal for most players. You can grind it without ever seeing a surge. Prismare, Tideler and Flarefish have no confirmed milestone route.

Whether any of this is worth your time depends on your build. Check where these pets land in our tier list and the all pets index before you commit hours to the flood.

What We Can’t Confirm Yet

Update 12 is new, and some details are still moving. Here’s where the data is thin:

• Duration. Tested captures show the flood ending at the next egg reset, about five minutes. Some early coverage described it as lasting longer, so confirm in-game.
• The “10% per night” figure. It comes from in-game checks on November 8. The official patch notes only say a surge can happen each night.
• Night length. No source gives a clean real-time schedule for when “night” begins, so you can’t plan a timer around it.
• Flarefish’s rarity and any hidden pity system. None has been confirmed.

If the developers rebalance the event, the numbers above will change. Follow the update history page for new patches, and cross-check the live numbers on the Roblox.