Chambered Nautilus
Chambered Nautilus — uncommon World 4 pet. Seals the hoard away — fewer balls eaten.
Overview
Chambered Nautilus is an uncommon regular pet: Seals the hoard away — fewer balls eaten.
It comes from the World 4 · Maelstrom pet crate and carries 3 abilities unlocked one per star.
Abilities
This pet has 3 abilities and unlocks them one per star: the first is live from the day you get it, the second needs 2★, the third 3★ (see fusion below).
| ★ | Ability | Lv 1 | Lv 25 | Lv 50 | Lv 75 | Lv 100 | Charm |
|---|---|---|---|---|---|---|---|
| 1★ | Sealed Chamber | +0.00% | +6.1% | +12% | +19% | +25% | CHARM |
| 2★ | Undertow Pull | +0.00% | +24% | +49% | +75% | +100% | CHARM |
| 3★ | Spiral Vault | 0.00% | 2.4% | 4.9% | 7.5% | 10% | CHARM |
- Sealed Chamber — Cuts the chance the whirlpool devours a swallowed ball by this much, so far more of your bank survives.
- Undertow Pull — Raises the chance a ball is pulled into the whirlpool on every peg it passes inside the eye.
- Spiral Vault — When you launch from the whirlpool, this chance the shot costs no stored ball.
Stars and fusion
Fuse 3 copies at the same star into one at the next — guaranteed, at the Fusion forge. The XP invested in all three copies is pooled into the result.
| Fuse | Needs | Essence |
|---|---|---|
| 1★ → 2★ | 3 × 1★ Chambered Nautilus |  1,000 |
| 2★ → 3★ | 3 × 2★ Chambered Nautilus | 3,000 |
Each star switches on the next ability in the table above.
Bring a 3★ copy to the Ball Grove to try for amped (purple) stars: each amped star adds +5% to that star's ability (1★ 1 in 10, 2★ 1 in 25, 3★ 1 in 50 on Hard; 1 in 30 / 1 in 75 / 1 in 150 on Regular).
A 3★ copy can become shiny by fusing an owned shiny Chambered Nautilus into it for 10,000 — see Shiny pets.
Levelling
Gold balls needed per level for a uncommon pet (level-cost multiplier ×2.009):
| Level | Gold balls to next level |
|---|---|
| 1 → 2 |  99 |
| 10 → 11 | 142 |
| 25 → 26 | 235 |
| 50 → 51 | 454 |
| 75 → 76 | 751 |
| 99 → 100 | 1,111 |
- Total Lv 1 → 100
- 50,019
Salvage
Salvaging a copy yields 200, plus a 20% chance of 
20 on top. See Pet Salvage.
How to get
- World 4 · Maelstrom pet crate — 15% (1 in 6.67) per pull at 500
- Base odds are before the Pet Score rare-pet boost and any luck buffs — the pet crate odds page shows the live numbers.
- Every copy can be traded, free pulls included (free-pull copies salvage for full essence too, only without the bonus gem roll). A trade is a straight swap — shiny, stars, purple stars, evolution, nature and worn items go with the pet, its level resets to 1, and it can be traded again.
See also
- Pets — Every pet in Ballin Tycoon — rarities, crate odds, abilities, natures and jobs, levelling costs, stars, evolution, shinies and where each one comes from.
- Pet Crates — Gems in, pets out — cost per world, the intro sale, free pulls, the exact roll with Pet Score boosts, mythic pity, shiny odds and every pet's chance per world.
- Pet Crate Odds — Exact chances for every pet in every world's pet crate, with and without the Pet Score boost, plus pity, intro pricing and shiny odds.
- Pet Fusion — Fuse three copies of a pet into the next star tier — costs by rarity, what each star unlocks, and which pets can fuse.
- Pet Salvage & Essence — Turn spare pets into Pet Essence — yields by rarity, the gem bonus, what cannot be salvaged, and everything essence pays for.