100 Days At Sea
Survival log

100 Days At Sea survival guide to day 100

Survive by turning the starter beach into a working raft route first. Feed loose scrap into the grinder, craft the raft, use the old sack for return trips, secure food, then expand only when fuel and storage are under control.

Open official gameSurvival guide

Day 1 to day 3: make the raft real

The clean opening is to stay near the starter beach until loose scrap, stools, planks, and metal have gone through the grinder and the raft is crafted. Pick up one useful item, carry it back, feed the grinder, then repeat until the raft exists instead of swimming away with no return plan.

  • Sweep nearby beach items before swimming far.
  • Return each useful item to the grinder instead of wandering with full hands.
  • Craft the raft before starting island travel.
Diagnose this run
Why this advice is shown
  • Observed grinder, raft creation, old sack, Cooking Pot, Map Radar, and Crab Trap visibility in one run. View supporting source

Day 4 to day 7: build the first supply loop

Once the raft exists, the route becomes storage, food, and fuel. Use the old sack on island stops so chest loot, propeller pieces, scrap, and food come back in one safer trip, then unload before the next stop. The goal is not full-clearing the island; the goal is returning with something the raft can use.

  • Store useful island loot before moving deeper inland.
  • Bring crab meat or other food back before hunger becomes urgent.
  • Unload after each island stop so the raft can support the next route.
Diagnose this run
Why this advice is shown
  • Observed grinder, raft creation, old sack, Cooking Pot, Map Radar, and Crab Trap visibility in one run. View supporting source

Day 8 to day 10: add the first real stations

Day 10 punishes a messy raft. Read the current build menu before relying on Sawmill or Crab Trap availability, then use only the live food and crafting prompts the game shows. If Map Radar appears, read its live description before choosing it; the available evidence confirms menu visibility, not a route benefit.

  • Cook before a long island route when the live option is available.
  • Check the current Crab Trap prompt when food flow is the pressure.
  • Delay distant scouting until storage, fuel, and return timing are stable.
Diagnose this runCrab trap food routePump jack fuel route
Why this advice is shown
  • Harpoon, bonfire, cooking, exploration, combat, group-size, and survival milestones. View supporting source
  • Observed grinder, raft creation, old sack, Cooking Pot, Map Radar, and Crab Trap visibility in one run. View supporting source

Day 20 to day 50: stop sightseeing

Every island trip should bring home one thing the raft needs: food, metal, wood, parts, weapons, or a safer return. Choose a stop only after the live route shows an objective and a retreat path the current raft can support.

  • Leave with a food and fuel plan.
  • Bring weapons or a retreat route for enemy stops.
  • Return before the raft falls behind.
Diagnose this run
Why this advice is shown
  • Harpoon gathering, raft-base building, structures, defenses, exploration, weapons, and foes. View supporting source

Day 50 to day 100: protect the run

The Rescued badge marks the day 100 milestone. A conservative fallback for a long run is to protect supplies, keep the bonfire lit at night, cook before emergency hunger, and bring scouts back instead of adding an unnecessary fight.

  • Cook before emergency hunger.
  • Upgrade defenses before risky exploration.
  • Travel with a clear return path.
Diagnose this run
Why this advice is shown
  • Harpoon gathering, raft-base building, structures, defenses, exploration, weapons, and foes. View supporting source
  • Harpoon, bonfire, cooking, exploration, combat, group-size, and survival milestones. View supporting source
Survival steps

Use it in game

  1. Collect starter scrap, stools, planks, and metal near the beach.
  2. Feed the grinder until the raft can be crafted.
  3. Move onto the raft and set the first storage habit with the old sack.
  4. Use nearby islands for food, chest loot, and useful parts, then return.
  5. Check the live menu for cooking or Crab Trap options based on the pressure you actually feel.
  6. Push day milestones only when food, fuel, storage, and return timing are stable.
FAQ

Player questions

How do I survive longer in 100 Days At Sea?

Keep supplies, bonfire fuel, food, storage, and raft defenses ahead of exploration.

What shows day progression?

Official badges track day 1, 5, 10, 20, 30, 40, 50, 60, 70, 80, 90, and 100 milestones.

What do the survival-day badges verify?

They identify named milestones from day 1 through day 100; they do not explain why a particular run ended.

When should I explore islands?

Explore after the raft can handle travel and you have a food and fuel buffer.

Is the harpoon important?

Yes. The Hooked badge is earned by grabbing an object with the harpoon, and the starter route depends on pulling supplies back to the raft.

What should I do before leaving the starter beach?

Turn loose items into raft progress through the grinder. A crafted raft, a storage habit, and a first food plan matter more than early sightseeing.

How should I use the old sack?

Use it on every early island stop. Store chest rewards, scrap, food, and parts before moving around, then unload on the raft before the next trip.

Are Crab Traps always first?

No. Check whether the current menu and prompt make the option usable; otherwise keep the visible cooking or short food-return route.

How do I use the pump jack in 100 Days At Sea?

Open the current Pump Jack page and follow only the live menu and interaction prompts.

What should beginners do first in 100 Days At Sea?

Gather nearby supplies, use the harpoon, build raft safety, fuel the bonfire, and handle food before exploring.

Should I rush islands on my first run?

No. Explore after the raft has supplies, food, fuel, enough structure to recover, and a clear return objective.

What is a safe first island objective?

Bring back one useful supply, unload it, then decide whether the raft can support another stop.

Related sea logs

Raft Route

Route your run in bands: grind and craft the raft early, stabilize storage and food by day 10, make day 20 trips solve one problem, make day 50 trips protect supplies, and treat day 100 as a rescue push.

Boat Upgrades

Upgrade the raft around the pressure ending the run: structure and storage first, then check the current build menu before relying on Sawmill, Crab Trap, Map Radar, defenses, or later support.

Crab Trap

Crab Trap visibility was observed in the build menu, but recipes and collection behavior can change. Read the current menu and collect only when the live game shows an interaction prompt.

Pump Jack

Check the current build menu for Pump Jack, follow only the current in-game prompt, and collect only when a current prompt appears. If the menu, prompt, or output is absent, return to the normal fuel route instead of waiting on an assumed timer. No exact unlock requirement or production timer is published here.

Wiki

The useful loop is supply gathering, harpoon pulls, raft building, island exploration, weapon finding, bonfire progress, cooking, and day survival milestones.

Companions

Open the current Companion panel and read the live shop text before using Pearls. Compare only the roles shown there, then decide whether the current run needs a Class or Companion choice.