100 Days at Sea Oil Rig: Survival Guide & Best Classes - Locations

100 Days at Sea Oil Rig: Survival Guide & Best Classes

Master 100 Days at Sea on Roblox with our guide to oil rig survival, raft building, class tier lists, and active codes for pearls.

2026-06-27
100 days at sea Wiki Team
Quick Guide
  • 100 days at sea oil rig: Focus on harpoon gathering and raft expansion to survive the Bermuda Triangle.
  • Active Codes: Use code 20Pearls in the top-left menu to jumpstart your class progression.
  • Core Loop: Gather resources, upgrade your bonfire, find weapons, and explore mysterious islands.
  • Survival Goal: Reach Day 100 solo or with a crew to unlock the ultimate "Rescued!" badge.
  • Best Start: Choose the Survivor class early for health regeneration and reduced hunger.

100 Days at Sea Oil Rig Survival Basics

Surviving the 100 days at sea oil rig challenges requires a blend of resource management and tactical exploration. In this Roblox experience, you are dropped into the heart of the Bermuda Triangle with nothing but a small platform and a harpoon. Your primary objective is to expand this "oil rig" base into a floating fortress capable of withstanding sea monsters, rival rigs, and the harsh elements of the open ocean.

Video Highlights:

  • Harpoon Mechanics: How to efficiently hook floating crates and materials.
  • Base Expansion: The priority list for building structures and defenses.
  • Night Survival: Managing the bonfire and defending against early-game raids.
  • Pearl Farming: Using codes and exploration to unlock high-tier classes.

The game loop is deceptively simple but grows in complexity as you push past Day 30. You must constantly use your harpoon to pull in floating debris. These materials are the lifeblood of your raft, allowing you to build cooking pots, storage, and defensive walls. Early in the game, staying near your raft is safer than venturing too far, as the ocean is filled with threats that can quickly end a run.

Resource TypeAcquisition MethodPrimary Use
Floating ScrapsHarpoon / Manual PickupBasic raft expansion and structure building
PearlsCodes / Chests / BadgesUnlocking new classes and companion chests
DoubloonsIsland Loot / KillsPurchasing items from wandering merchants
Food ItemsGathering / FishingCooking chowder to manage the hunger bar
Pro Tip: Harpoon Efficiency

Don't just wait for crates to float by. Use the harpoon's range to snag items from a distance. This keeps you in the center of your raft, making it easier to react to sudden shark attacks or raids.

Base Construction and Bonfire Upgrades

Your raft is your only sanctuary. Building a functional 100 days at sea oil rig requires more than just laying down planks; you need a strategic layout that protects your bonfire—the heart of your progression. The bonfire levels serve as milestones for your base's power and utility, unlocking better crafting options and defensive capabilities.

1

Initial Resource Hooking

Use your harpoon to grab every piece of floating debris within sight. Focus on gathering enough wood and scraps to double the size of your starting platform within the first 2 days.

2

The Bonfire Foundation

Upgrade your bonfire to Level 1 immediately. This provides light and acts as a central hub for your base. By Day 10, aim for Level 3 to unlock basic defensive structures.

3

Cooking and Sustenance

Place a cooking pot near your bonfire. Use gathered ingredients to cook chowder. This is essential for long-term survival as raw food provides minimal hunger relief and no health regen.

4

Defensive Perimeter

As you reach the mid-game (Day 40+), build walls and spikes. Rival rigs and sea creatures will become more aggressive. A well-defended core ensures your bonfire stays lit during raids.

5

Storage and Organization

Don't leave resources on the floor. Build storage chests to organize materials by type. This prevents accidental loss during combat and helps you track what you need for the next upgrade.

Night Pressure

The ocean becomes significantly more dangerous at night. Ensure your bonfire is always fueled before the sun sets, or you'll find yourself fighting in total darkness against strengthened foes.

Bonfire LevelRequirementMajor Unlock
Level 1Basic MaterialsInitial light source and base hub
Level 5Mid-tier ResourcesAdvanced defensive structures and walls
Level 9Rare Island LootMaximum base utility and "Bonfire 9" badge
MasterSpeed ChallengeSpecial cosmetic and "Bonfire Master" title

Class Tier List and Selection Strategy

Classes in 100 Days At Sea define your playstyle and survival potential. You unlock these using Pearls, which can be obtained through the 100 days at sea oil rig code 20Pearls or by completing in-game milestones. Each class offers unique passives and starter tools that can make or break a 100-day run.

Survivor (S-Tier)

  • Cost: 50 Pearls
  • Buff: Faster regen, extra oxygen
  • Best For: Beginners and solo players

Sharpshooter (S-Tier)

  • Cost: 400 Pearls
  • Buff: +50% Gun Damage
  • Best For: Boss fights and ranged combat

Medic (S-Tier)

  • Cost: 60 Pearls
  • Buff: Rapid health regeneration
  • Best For: Co-op support and recovery

Choosing the right class depends on whether you are playing solo or with a crew. For solo players, the Survivor or Swordsman classes provide the durability needed to handle multiple threats simultaneously. In a group, having a Medic and a Sharpshooter creates a balanced team capable of tackling the Squid Boss or the Ice Biome challenges.

Class NameCostPrimary BuffStarter Tool
Pirate500 Pearls+50% Gun Damage / Boat HandlingBlunderbuss
Raider750 PearlsAmmo on Kills / +15% SprintDual Pistols
Fire Mage750 Pearls+50% Magic DamageMagma Staff
Sailor40 PearlsTop Speed / HandlingNone
Knight380 Pearls30% Damage ReductionClaymore
Economy Tip

If you're struggling with Doubloons, try the Merchant or Treasure Hunter classes. The extra income allows you to buy high-end weapons from merchants much earlier in the run.

Companion Chests and Passive Buffs

Companions are essential pets that provide automated utility or stat boosts. You obtain them by opening chests found on islands or purchased with Pearls. A good companion can automate the most tedious parts of the 100 days at sea oil rig experience, such as loot collection or food gathering.

CompanionChest TypeDrop ChanceMain Perk
SalamanderMagma Chest5%Automatically picks up nearby loot
OctopusWarrior Chest16%Brings materials every 120 seconds
SwordfishPirate Chest5%+10% Melee Damage boost
SeagullPirate Chest30%Periodically brings food to player
DolphinFisherman's Chest13%+7.5% Sprint Speed increase
Companion Synergy

Pair the Salamander with a combat-heavy class like the Raider. While you focus on fighting, the Salamander ensures no loot is left behind, maximizing your efficiency during island raids.

Exploring Islands and Defeating Bosses

Once your raft is stable, you must venture out to the various biomes. Each island offers unique resources and boss encounters necessary for reaching Day 100. The 100 days at sea oil rig serves as your mobile base, but the real rewards lie in the dangerous reaches of the Volcano and Ice regions.

Exploration Checklist:

  • Visit all islands in a single session for the 'Magellan' badge
  • Defeat the Squid Boss to unlock 'Arms of Victory'
  • Rescue the penguins in the Ice Biome
  • Collect the Magma Staff from the Volcano region
  • Defeat at least 3 rival rigs to secure the ocean
Boss / ThreatLocationRecommended ClassKey Reward
Squid BossOpen SeaSharpshooter / PirateArms of Victory Badge
Ice BossIce BiomeFire Mage / SoldierKing Of The Snow Badge
Fire GolemVolcano RegionMedic / KnightMagma Materials
Ghost GalleonRandom RaidSharpshooterHigh-tier Chest Weapons
Boss Prep

Never engage a boss without a full inventory of chowder and at least one ranged weapon. Ranged damage is significantly safer against large targets like the Squid Boss, which can easily destroy parts of your raft if you get too close.

Badges and Achievement Completion

Badges in 100 Days At Sea represent your mastery over the ocean. From simple milestones like surviving 5 days to extreme challenges like reaching Day 100 solo, these achievements track your progress and skill level.

Badge NameCategoryUnlock RequirementRarity
Out At SeaStarterPlay the game for the first time100%
Survive 50 DaysMilestoneReach Day 50 in a single run4.2%
Rescued!CompletionReach Day 100 and finish the run1.8%
All AloneChallengeSurvive 100 days completely solo0.2%
Bonfire MasterRaft BaseMax bonfire before Day 3<0.1%
Badge Tracking

Use the in-game badge menu to see your progress. High-tier badges like "Magellan" require a dedicated run where you focus solely on travel rather than base building.

Frequently Asked Questions

Q: How do I redeem codes in 100 Days At Sea?

Launch the game on Roblox, click the 'Codes' button at the top-left of the screen, enter your code (like 20Pearls), and hit submit to claim your rewards.

Q: What is the best class for a solo 100-day run?

The Survivor class is widely considered the best for solo play due to its passive health regeneration and reduced hunger drain, which are vital when you have no teammates to help.

Q: Can I play 100 Days At Sea on mobile?

Yes, 100 Days At Sea is fully compatible with the Roblox mobile app, though the harpoon mechanics can be slightly more challenging to master on a touchscreen.

Q: How do I get more Pearls without spending Robux?

You can earn Pearls by redeeming active codes, completing survival milestones, and finding rare chests on islands during your exploration phases.