Outer Worlds 2 Otto’s Lock Puzzle Guide: Complete Solution & Rewards

Free Market Station in The Outer Worlds 2 hides one of the game’s most satisfying secret puzzles—Otto’s Lock, an intimidating array of 11 switches that must be activated in a precise sequence. With no obvious hints nearby, this puzzle has stumped countless players who stumbled upon it while exploring the Sub Rosa faction’s headquarters.

The good news? You don’t need to guess randomly through thousands of possible combinations. There’s a legitimate solution method using an endgame gadget, or you can skip straight to the answer with this guide. Either way, the rewards behind that locked door are worth the effort—including a valuable Advanced Decryption Key and a unique weapon.

Let me walk you through finding Otto’s puzzle, solving it efficiently, and understanding what makes this secret worth discovering.

Getting to Free Market Station

Before you can tackle Otto’s Lock, you need access to Free Market Station itself—the hidden headquarters of the Sub Rosa faction. This location isn’t available from the start; you’ll need coordinates first.

Unlocking Free Market Station Coordinates

The Easiest Method: Help Emeline Galloway

1. Travel to Fairfield’s greenhouse (early in your Paradise Island exploration)
2. Speak with Emeline Galloway, the gardener working there
3. Accept her request to clear Sub Rosa records from a nearby terminal
4. Complete the data deletion task
5. Return to Galloway for your reward

What You’ll Receive:

• Free Market Station coordinates (unlocks travel destination)
• Substantial Sub Rosa faction reputation boost

This questline is one of the earliest ways to access Free Market Station, and it’s completely optional from a main story perspective. However, if you’re thorough about exploration, you’ll naturally encounter Galloway early on.

Alternative Route: You can also obtain coordinates through Tristan’s recruitment questline, which involves more complex faction interactions but leads to the same destination.

Why Visit Free Market Station Early?

Beyond Otto’s puzzle, Free Market Station contains:

• Unique vendor inventory with rare items
• The 2nd Choice bar (involved in Tristan’s companion quest)
• Several side quests and faction-related missions
• Multiple high-security lockboxes with valuable loot

If you’re the type who likes uncovering secrets and maximizing your gear early, getting here sooner rather than later pays dividends.

Finding Otto’s Puzzle Location

Once you’ve docked at Free Market Station, navigating to the puzzle room requires some environmental awareness. It’s not hidden behind a locked door or skill check—just tucked away where casual explorers might miss it.

Step-by-Step Navigation:

1. Enter Free Market Station from your ship’s landing pad
2. Move forward through the entrance hall (the main corridor you spawn in)
3. Watch the left side for a room containing a Rift Anomaly (you’ll see the distinctive visual effect)
4. Enter the Rift Anomaly room and immediately look to your right
5. Locate the low gap in the wall—this is easy to miss if you’re not actively searching
6. Crouch and crawl through the opening into the adjacent room
7. Turn left after emerging from the crawlspace
8. Climb the ladder you’ll find against the wall
9. You’ve arrived at Otto’s puzzle location

The puzzle itself is unmistakable once you reach it: 11 switches arranged in three rows facing a locked door with three colored lights. The setup looks deceptively simple, but there are 39,916,800 possible combinations if you tried every permutation randomly. Thankfully, you won’t need to guess.

Visual Landmark Tip: The Rift Anomaly room is hard to miss due to its distinctive purple-blue energy distortion effect. If you see that anomaly, you’re in the right area—just remember to check right immediately upon entering.

The Intended Solution Method (N-Ray Scanner)

The developers designed Otto’s Lock to be solved using the N-Ray Scanner gadget, which you acquire much later in the game’s story progression on Golden Ridge.

How the N-Ray Scanner Reveals the Answer

After you make your decision about the Vox Relay on Paradise Island, you’ll eventually reach Golden Ridge and obtain the N-Ray Scanner. This gadget has multiple uses throughout the game, but one specific function relates directly to Otto’s puzzle:

N-Ray Scanner Ability: See electrical wiring and circuitry through solid surfaces

When you equip the N-Ray Scanner and point it at Otto’s locked door, you’ll see three colored wires running from the three lights on the door, snaking through the wall, and connecting to specific switches in the array. The puzzle’s solution becomes clear: flip the switches in the order that the wires pass through them, from right to left.

This is brilliant puzzle design—it’s completely solvable without external help, but only if you have the right tool and the observational skills to trace the wire paths correctly. It rewards thorough exploration and using your gadgets creatively.

But here’s the thing: Most players discover Otto’s puzzle long before reaching Golden Ridge and acquiring the N-Ray Scanner. Coming back later works, but why wait when you can solve it immediately?

Otto’s Lock Puzzle Solution (Complete Answer)

If you want to skip the gadget requirement and solve the puzzle right now, here’s the exact switch sequence. I’ve numbered the switches for clarity:

Row 1:  [1]  [2]  [3]
Row 2:  [4]  [5]  [6]  [7]
Row 3:  [8]  [9]  [10] [11]

The Correct Switch Order (flip switches in this exact sequence):

1. Switch #7 (far right, middle row)
2. Switch #2 (center, top row)
3. Switch #1 (far left, top row)
4. Switch #11 (far right, bottom row)
5. Switch #3 (far right, top row)
6. Switch #6 (second from right, middle row)
7. Switch #5 (center-right, middle row)
8. Switch #4 (far left, middle row)
9. Switch #10 (second from right, bottom row)
10. Switch #9 (center-right, bottom row)
11. Switch #8 (far left, bottom row)

Important: You must flip the switches in this exact order. Flipping them out of sequence won’t work—the puzzle tracks the activation order, not just which switches are in the “on” position.

Visual Walkthrough Tips

• Start from the right side: The sequence begins with Switch #7 (middle row, rightmost position)
• Work methodically: Don’t rush. Each switch should produce an audible click when activated
• Watch the lights: After each switch flip, glance at the three lights on the door. They’ll progressively turn green as you follow the correct sequence
• All three lights green = success: Once all lights are green, the door unlocks automatically

If you make a mistake, the puzzle resets. Simply interact with the main control panel to reset all switches and start over. There’s no penalty for failure beyond having to restart the sequence.

Otto’s Lock Puzzle Rewards

So what’s behind that locked door? The loot breakdown makes this puzzle absolutely worth solving, especially early in your playthrough.

Complete Reward List

1. Advanced Decryption Key (1x)
This is arguably the most valuable item in the room. Advanced Decryption Keys are rare consumables used to open high-security lockboxes scattered throughout Arcadia. These lockboxes contain some of the best gear in the game, so every key you find is precious.

Getting one this early—potentially before even reaching Golden Ridge—gives you access to premium equipment that normally wouldn’t be available until much later in the story.

2. Bit Cache (470 Bits)
Nearly 500 Bits is substantial, especially if you solve this puzzle early. That’s enough to:

• Purchase the Hover Drone pet from the Euphoria Coast vendor
• Buy several Mag Picks or Bypass Shunts
• Stock up on Inhaler Charges and consumables
• Save toward more expensive vendor items

3. Triple-Barrel Shotgun (Base Version)
A unique weapon with interesting mechanics. While it’s the “base” version without modifications, triple-barrel shotguns have satisfying firing patterns and can be upgraded at crafting stations (especially useful if you have Niles in your party for mobile crafting access).

Even if shotguns aren’t your preferred weapon type, this is vendor fodder worth decent Bits if you need cash more than firepower.

4. Soot-Smeared Journal (Text Log)
Lore content that provides background on Otto and the circumstances surrounding this puzzle. The Outer Worlds series is excellent at environmental storytelling, and this journal adds context to the Free Market Station’s history.

If you’re invested in the narrative, reading these text logs enriches your understanding of the world. If you’re not, it’s still worth collecting for completionists.

Is It Worth It?

Absolutely. The Advanced Decryption Key alone justifies solving this puzzle. Keys are finite resources that gate access to the best loot caches in the game. Getting an extra key—especially one available this early—is a significant advantage.

The Bits are a nice bonus, the shotgun is situationally useful, and the journal satisfies lore enthusiasts. But really, you’re here for that key.

Strategic Timing: When Should You Solve Otto’s Puzzle?

You have two timing options, each with different advantages:

Option 1: Solve It Immediately (Recommended for Most Players)

Advantages:

• Get the Advanced Decryption Key early for upcoming high-security lockboxes
• 470 Bits helps with early-game purchases and equipment
• Triple-Barrel Shotgun provides a solid weapon option before better drops
• One less thing to remember to come back for later

Requirements:

• Access to Free Market Station (via Galloway’s quest or Tristan’s storyline)
• This guide (or memorizing the switch sequence)

Best for: Players who value early advantages and don’t mind using external resources

Option 2: Wait for the N-Ray Scanner (Intended Method)

Advantages:

• Solve the puzzle “legitimately” as the developers intended
• Experience the satisfaction of figuring it out yourself
• Learn how to use the N-Ray Scanner for other environmental puzzles

Requirements:

• Progress the main story through Paradise Island’s Vox Relay decision
• Reach Golden Ridge and acquire the N-Ray Scanner gadget
• Return to Free Market Station

Best for: Players who prefer organic discovery and don’t want spoilers

My take: Unless you’re specifically avoiding guides and want the pure discovery experience, solving it early with the provided sequence is perfectly fine. The game doesn’t penalize you for solving puzzles “out of order,” and the rewards are more impactful when obtained sooner.

Other Hidden Puzzles and Secrets

Otto’s Lock is one of several optional puzzles scattered throughout The Outer Worlds 2. If you enjoyed solving this one, keep an eye out for:

Environmental Puzzles
Many locations contain switch-based puzzles, wire-tracing challenges, or environmental logic problems that reward observant players with loot caches.

Hidden Rooms
Free Market Station has multiple secret areas beyond Otto’s puzzle room. Thoroughly explore every location—crawlspaces, ventilation shafts, and locked doors often lead somewhere valuable.

Faction-Specific Secrets
Each major faction headquarters contains unique puzzles or challenges tied to that faction’s themes. The Order of the Ascendant, Sub Rosa, and others all have hidden content worth discovering.

Scanner-Required Discoveries
Once you get the N-Ray Scanner, revisit previous locations. Many areas have secrets only visible with scanner gadgets equipped.

Troubleshooting Common Issues

The Switches Won’t Activate in Sequence

Make sure you’re flipping them in the exact order listed. The puzzle won’t accept the correct switches if they’re activated out of order. If you mess up, reset via the control panel and start fresh.

The Door Won’t Open Despite All Green Lights

This is extremely rare but can happen due to bugs. Try:

1. Saving and reloading
2. Leaving the area and returning
3. Resetting the puzzle and solving again

I Can’t Find the Crawlspace

The gap is low and easy to miss. Look right immediately upon entering the Rift Anomaly room. You should see a small opening near floor level. Crouch to fit through.

I Don’t Have Free Market Station Coordinates Yet

Complete Emeline Galloway’s greenhouse quest in Fairfield (earliest option) or progress Tristan’s companion recruitment storyline (later option).

Maximizing Your Advanced Decryption Key

Since the Advanced Decryption Key is the puzzle’s best reward, let’s talk about using it effectively:

Where to Use Your Key:

• Save it for high-value lockboxes in Golden Ridge and beyond
• Don’t waste it on early Paradise Island lockboxes (they contain lower-tier loot)
• Check lockbox contents before using keys—some aren’t worth the expenditure

Farming More Keys:
Advanced Decryption Keys are rare but farmable. Check our comprehensive key farming guide for spawn locations and efficient acquisition methods.

Storage Tip:
Keys don’t expire or degrade. Hold onto them until you find lockboxes containing gear that matches your build strategy.

Frequently Asked Questions

External Resources

For more about The Outer Worlds universe, visit the official game website or check the Xbox page.

Final Thoughts: Puzzle Design Done Right

Otto’s Lock exemplifies what makes The Outer Worlds 2’s optional content satisfying. It’s:

• Completely optional (you never need to solve it for story progression)
• Legitimately solvable without external help (via N-Ray Scanner)
• Accessible to players who prefer guides (like this one)
• Rewarding enough to justify the effort

The fact that you can solve it early using guides doesn’t diminish players who wait for the scanner—both approaches are valid. Obsidian respects player agency, whether you’re a completionist who backtracks after getting new gadgets or a pragmatist who looks up solutions to move forward.

The Advanced Decryption Key reward makes this puzzle genuinely valuable rather than just a curiosity. In a game filled with choices that matter, having optional content that rewards exploration and puzzle-solving adds another layer of depth to the experience.

If you haven’t visited Free Market Station yet, prioritize getting those coordinates from Emeline Galloway. And when you do arrive, don’t just rush through—take time to explore every corner, crawl through suspicious gaps, and investigate rooms with anomalies. That’s where The Outer Worlds 2 hides its best secrets.

Related Guides:

• All Companions Recruitment Guide
• Advanced Decryption Keys Farming Guide
• Commander’s Safe Key Location
• High-Security Lockboxes Guide
• What to Do First Guide
• Beginner’s Tips & Tricks