Black Market & Underground Exchange

The Underground Exchange trades goods through the janitorial service. After it is unlocked, put the required goods in the trash bin and use the service; the exchange returns goods by morning. It is separate from ordinary Black Market customers buying and selling at your counter.

See Sawyer and the Black Market for the introduction and reputation rules. At −40 Black Market standing, the Blacklisted penalty bars you from the Exchange.

Regular trades

In demo build 049-Rev3-L, counts mean distinct matching item objects. “Two ammunition items” does not mean two loose rounds inside one ammunition item. Item condition is also checked; a matching name alone may not make damaged or otherwise invalid goods eligible.

Give→Possible returnLimit

1. GiveGive: Water Filter×3
   →
   Possible returnPossible return: Water Filter×1New / replacement
   Limit: Once per night
2. GiveGive: Modules×2
   →
   Possible returnPossible return: Random module×1
   Limit: Once per night
3. GiveGive: Vial of "Dream Dust"×2
   →
   Possible returnPossible return: Dream Dust supplies
   Limit: Once per night
4. GiveGive: Disposable Keycard (Command)×1
   →
   Possible returnPossible return:

   Random ×2

   • Disposable Keycard (Engineering)
   • Disposable Keycard (Medical)
   • Disposable Keycard (Security)
   Limit: Once per night
5. GiveGive: Poison×2
   →
   Possible returnPossible return: Energy Cell×1charge depends on the inputs
   Limit: Once per night
6. GiveGive: Ammunition×2
   →
   Possible returnPossible return: Food or drink
   Limit: Once per night
7. GiveGive: Smuggler's Bay×1+Oxymore Injector×8
   →
   Possible returnPossible return: Smuggler's Bay (Modified)×1
   Limit: Once per night

Promotional trades (reset Monday)

These seven recipes are registered as promotional. The screenshot labels this section as resetting Monday. This page catalogs all seven possible promotions; only recipes currently offered are active.

Give→Possible returnLimit

1. GiveGive: Vial of "Dream Dust"×1
   →
   Possible returnPossible return: Dream Dust medical rewards
   Limit: Once per night
2. GiveGive: Disposable Keycard (Security)×1
   →
   Possible returnPossible return: Security Department Supply Crate×1
   Limit: Once per night
3. GiveGive: Disposable Keycard (Medical)×4
   →
   Possible returnPossible return: Medical Bay Supply Crate×1
   Limit: Once per night
4. GiveGive: Disposable Keycard (Engineering)×4
   →
   Possible returnPossible return: Engineering Foundry Supply Crate×1
   Limit: Once per night
5. GiveGive: Seed×1
   →
   Possible returnPossible return: Energy Cell×1100 charge
   Limit: Once per night
6. GiveGive: Scavenger's Token×1
   →
   Possible returnPossible return: +25 Black Market reputation
   Limit: Once per night
7. GiveGive: Oxymore Injector×1
   →
   Possible returnPossible return: Immunivax Injector×1Genuine
   Limit: Once per night

Screenshot-observed quantities: Command Keycard rewards ×2, eight Oxymore Injectors for the Smuggler’s Bay trade, and four matching keycards for each Medical and Engineering crate trade. The Monday reset is also screenshot-observed; the game build is unknown. Other quantities follow demo build 049-Rev3-L.

Every recipe has a one-acceptance-per-night limit. Bringing twice the inputs is not a promise of two uses of the same recipe. Overlapping recipes compete for physical items, so check the active list before leaving supplies for the cleaners.

Module reward pool

These are possibilities, not seven rewards for a single exchange. Generated module properties can vary.

• Eco Module
• Efficiency Module
• Neural Core Module (Capped)
• Overclock Module
• Performance Module
• Quality Module
• Refinement Module

Regular Dream Dust reward pool

The reward routine reads the input’s purity and uses random branches. These are all named item possibilities and prepared-item outputs in that routine; they are not one guaranteed bundle.

• Birth Control Pill
• Blood Bag
• Box of REX Condoms
• Electronic Parts (Common)
• Energy Cell
• Food Stamp
• Kitchen Knife
• Meat Cleaver
• Medical Supplies (Common)
• Metal Ingot
• Peat
• Raw Meat (Small)
• Scavenger's Token
• Self Charging Energy Cell
• Water Filter

Promotional Dream Dust reward pool

This is a separate, medical-focused recipe. Its Immunivax branches include both genuine and expired prepared variants. Inspect what you receive; do not assume every injector in this pool is fresh.

• Bag of "Blue Blood"
• Blood Bag
• Immunivax Injector
• Medical Supplies (Common)
• Oxymore Injector
• Synaprest Injector

Ammunition reward pool

• Cat Chocolate Bar
• Galaxy Blend
• Peat
• Pilk
• Soda

Crates are containers, not fixed bundles

A crate exchange gives the specified crate. Its contents are generated by a separate loot-crate factory, so the recipe is not a guarantee of a particular gun, drug or module inside. Keycard exchanges and opening a locked crate are different actions.

Thief stock and locked crates

The visiting Thief can offer these items, including five kinds of filled, locked crates. Open a crate entry to see its possible contents.

Possible offers at your counter. Stock varies with random rolls, reputation and training unlocks; the visitor and every listed item are not guaranteed each day.

• Advanced Turbo Booster
• Advanced Water Filter
• Bottle of Spring Water
• Chemical Supplies (Common)
• Cryptographic Desequencer Chip (Command)
• Cryptographic Desequencer Chip (Engineering)
• Cryptographic Desequencer Chip (Medical)
• Cryptographic Desequencer Chip (Security)
• Cryptographic Desequencer Chip (Service)
• Disposable Keycard (Command)
• Disposable Keycard (Engineering)
• Disposable Keycard (Medical)
• Disposable Keycard (Security)
• Disposable Keycard (Service)
• Eco Module (random variant)
• Efficiency Module (random variant)
• Engineering Foundry Supply Crate
• ETERNAL Rejuvenation Serum
• HydraTech Micro Water Purifier
• Immunivax Injector
• L'ESSENCE Pheromone Perfume
• Medical Bay Supply Crate
• Medical Supplies (Common)
• Overclock Module (random variant)
• Performance Module (random variant)
• Quality Module (random variant)
• Refinement Module (random variant)
• Security Department Evidence Locker
• Security Department Supply Crate
• Service Department Supply Crate
• Stack of Scratcher Tickets (5)
• SYNC Neuroactive Perfume

StoreClientList.CreateThief; PreBuiltItemHelper.FillEvidence/Medical/Security/Service/Engineering. Demo 049-Rev3-L. Sources: all fourteen ExchangeList factories registered by ExchangeManager.Init; acceptance callbacks and the static module pool; ExchangeBarter.CanAccept/GetRequiredItems, BarterCondition.IsItemValid and ExchangeManager. Demo build 049-Rev3-L. The SeedBarter callback passes 100 to EnergyCredit; BMRepBarter passes 25 to ModBMReputation.