100 Days at Sea Bosses & Threats — What's Actually Out There

The seven verified 100 Days at Sea bosses

• Angler Fish — The night hunterper PGG's tested guide

  Comes for you if you're off your raft at night or your Bonfire goes out — and once it locks on, it never breaks chase. Two counters: keep the Bonfire fed (prevention), or redirect it with a Flare Gun (escape). This is the threat that teaches new players what the Bonfire is really for.

• Ghost Pirates — Wave attackersper PGG's tested guide

  The garrison of the Survivor Islands — clear their waves to rescue the stranded crew. Their corpses have an afterlife: feed them into the crafting machine for Green Gum.

• Alien invasion — Night 6–7 eventper PGG's tested guide

  A scripted assault that lands on your raft in the first week. Repellable with melee weapons — and the aftermath yields a Transponder, the key to Alien Island. Treat it as a loot opportunity, not a disaster.

• Snorflord — Boss — the Medkit piñataper Sportskeeda

  A confirmed boss worth hunting for supplies: it drops a Medkit on defeat, and another spawns under the benches near its arena.

• Kraken — “Tentaclysm” — Boss — the deep oneplayer content (September 2026)

  Confirmed through player boss-fight content, and players call it by name: Tentaclysm. Its mechanics remain undocumented by any trusted source — treat detailed 'Kraken guides' elsewhere with suspicion.

• Ghost Galleon — Boss — the bell-summoned shipofficial Roblox badge list

  The game's official badge list confirms the Ghost Galleon as a boss encounter, alongside a 'Third Bell Rung' badge — players summon it by ringing bells. Crewed by the same Ghost Pirates whose corpses feed the Green Gum recipe.

• Corruption Dungeon boss — Boss — the newestofficial Roblox badge list

  Added in the July 17, 2026 Corruption update: the badge for defeating it ('Corruption Most Foul') had been earned by only a few dozen players within the first day. Mechanics undocumented — this is the current frontier.

How to survive each 100 Days at Sea boss

A list of names is the easy half. Below is what each threat actually asks of you — counters where a counter is documented, and an honest "nobody knows yet" where one is not.

• Angler Fish — Feed the fire, then run with a flare

  It has exactly two triggers — being off your raft after dark, and a Bonfire that has gone out — so almost every Angler Fish death is a fuel-management failure rather than a fight you lost. Treat refuelling as a standing chore, not a one-off: the game's own “Bonfire 8” badge asks you to burn 1,500 items in a single session, which is a fair measure of how much the fire eats over a long run. Once it has locked on it never breaks chase, and no source we trust documents killing it — the Flare Gun redirects it, which is an escape, not a win.

• Ghost Pirates & ghost raids — Build the wall before you need it

  This is the combat event you will actually meet. The official badge for surviving a ghost raid has been awarded 40.7 million times — 61% of players — and it sits between the Day 1 badge (70%) and the Day 5 badge (47%), which places your first raid inside the opening days of a run. That is early enough that defences stop being a mid-game project: walls, and an Auto Turret if you are solo and cannot cover every angle. Their corpses are not waste, either — feed them into the crafting machine for Green Gum.

• Alien invasion — Fight it, and then keep going

  Melee is enough to repel the Night 6–7 landing, and clearing it yields the Transponder that opens Alien Island. What the badge list shows is that the aliens are a whole content branch rather than one night: 161,649 players have repaired and flown away in the UFO, 137,629 have finished a laser mirror puzzle on the mothership, and 113,835 have destroyed the alien fleet outright. Hiding through the invasion skips the entrance to all of it.

• Snorflord — Loot the benches too

  The reason to seek this fight out is supply: it drops a Medkit on defeat, and a second one spawns under the benches near its arena. In a game where a knock-down without a Medkit can end a run, a Snorflord detour is worth more than the fight costs.

• Kraken / Squid Boss — Verified to exist, mechanics still open

  Players fight a Kraken on camera and call it Tentaclysm; the official badge list separately names a Squid Boss, beaten by 131,848 players — the most-defeated named boss in the game. Whether those are the same encounter is not something any source we trust states, so we keep them apart rather than merge them into a tidier answer. No counter has been documented for either.

• Ghost Galleon — Repeatable within a single run

  The badge for it is not “beat the Galleon” but “defeat the Ghost Galleon 3 times in a single run”, earned by 29,078 players — so this is a recurring encounter you can farm inside one session rather than a one-off scripted fight. Its badge name, Third Bell Rung, is where the player reports about summoning it with bells line up.

• Corruption Dungeon boss — The current frontier

  Nine days after the July 17 Corruption update, 27,769 players had cleared it. The corruption multiplier badges that came with it show how far the mode scales and how few get there: 17,917 players have hit a 10x multiplier, 517 have hit 15x, and just 148 have hit 20x — the rarest badge in the entire game. Nobody has published working mechanics for the encounter yet, including us.

The two mechanics every threat runs through

Strip out the names and this game has one defensive system and one panic button. Learning them is worth more than memorising any boss roster.

The Bonfire is a progression gate and a ward at once

The official badge list settles a question the guides gloss over: the numbered Bonfire ladder runs from level 1 to level 7, and that is the cap. The two badges above it are feats rather than levels — "burn 1,500 items in a single session" and "reach max bonfire level with 4 or more people" — which is how we know 7 is the top. The climb is where most runs quietly end: 83.8% of all players reach level 1, 55.1% reach level 3 (which is what your Sawmill is really buying you), 26.8% reach level 4 and the Magnet, and only 3.3% ever see level 7. Keeping the fire litis a separate matter from levelling it — an extinguished Bonfire is one of the Angler Fish's two triggers at any level, which is why the fire is the single structure you never neglect.

The Flare Gun buys distance, not a kill

The Flare Gun is the only documented answer to an Angler Fish that has already locked on, and what it does is redirect the chase. No trusted source describes killing one. That distinction matters for how you carry it: it is an emergency exit for a night that went wrong, not a weapon you build a strategy around. If you find yourself firing flares regularly, the actual fix is upstream — more fuel on the fire, and a hard rule about not swimming after dark.

How many players have actually beaten each boss

Roblox publishes an award count for every badge in a game, which makes boss difficulty measurable instead of arguable. We pulled the full badge list for 100 Days At Sea on July 26, 2026 and worked out each one as a share of the 66,655,999 people who have ever launched the game.

Where these percentages come from. All of them are Roblox's own public badge counts for this game, read on 2026-09-01, divided by the 90,280,294players who hold "Out At Sea" — the badge you get for launching the game at all. Roblox awards badges once per player for life, not once per run, so these say how many people have ever reached a milestone, not what fraction of runs succeed.

Read it as a difficulty ranking with one caveat: a low count can mean a hard fight or simply a recent one. The Corruption boss is both — it has only existed since July 17.

Encounters the badge list confirms that no guide covers

The same badge list names fights that appear in no written guide anywhere, ours included. We can confirm they exist and how rare they are; we cannot yet tell you how to do them, and we would rather say that than fill the gap with guesses.

• Three rival rigs— a badge asks you to find and defeat all three in a single session (268,350 players, the most-earned of the game's combat-objective badges). Nobody has published a route to all three.
• Glorbus— a named character you feed: "give Glorbus all the food he needs" (182,344 players). What he gives back is undocumented.
• The mothership laser mirror puzzle — 137,629 players have solved it; not one write-up explains it.
• Challenge mode, tiers 1–6 — a whole difficulty structure with its own ladder, thinning from 18,039 players at tier 1 to 1,162 at tier 6.
• Killing 1,000 aliens — 444 players. The second-rarest badge in the game, behind only the 20x corruption multiplier.

About those other boss lists

You'll find sites listing a tidy six-boss roster — "Sand Worm", "Ghost Captain", "Frost Giant", a volcano boss whose name changes between "Lava Guardian", "Fire Golem" and "Lord of Lava" depending on which site you read. When names diverge like that, you're reading generated guesses — and we checked those names against the game's official badge list, where none of them appear. What the badges do confirm: a Squid Boss, an Ice-biome boss and a volcano "lord of lava", plus a volcano area that players unlock by tossing three golems in. As footage pins their real mechanics down, they'll be added above with dates.

FAQ

• How do I stop the Angler Fish in 100 Days At Sea?

  Prevention: stay on your raft at night and never let the Bonfire go out — those are its two trigger conditions. If it's already chasing you, a Flare Gun redirects it. It does not give up on its own.

• What does Snorflord drop?

  A Medkit on defeat — plus a second one that spawns under the benches near its arena, making a Snorflord run one of the four verified Medkit sources in the game.

• Is the Kraken real in 100 Days At Sea?

  Yes — and players call it Tentaclysm. It appears in player boss-fight content, but its mechanics haven't been documented by any trusted source. Detailed Kraken guides circulating on AI-generated wikis contradict each other, which is why we list it as verified-to-exist, mechanics pending.

• How hard is the alien invasion?

  Manageable — the tested verdict is that melee weapons are enough to repel it. The reward (a Transponder unlocking Alien Island) makes it worth fighting rather than hiding from.