J-Lab is packed with valuable gear, but also some of the most ruthless AI ducks in the game universe. A sprawling underground lab full of high-tier items, J-Lab serves as Duckov's advanced loot zone, designed around a tiered security clearance system.

There are several types of J-Lab cards: The base J-Lab 1 card for standard zone access, J-Lab 2 card for intermediate labs, and multiple color-coded cards (Red, Blue, Black, Green, Yellow) for endgame areas packed with premium gear.​

  • The J-Lab 1 card is the easiest to acquire and can be purchased after completing a specific quest (Copy Pass).
  • J-Lab 2 brings access to lower lab levels with better gear, but is harder to find.
  • Color cards are rare loot, typically found in high-risk areas (Executive Wing, advanced raids, B2 vaults, mysterious houses, or bought from vendors like the supermarket).​

Cards can be single-use (except for permanent ones like Yellow), and sometimes drop from marked rooms (using X or O keys), high-tier chests, or boss enemies.

Preparing for raids

Bring Tier 3+ armor, AR ammunition, healing items, water, and food for B1 runs. B2 demands Tier 4-5 armor, armor-piercing rounds, and electrified weapons for invisible enemies.

Always check extraction zones upon spawning to know escape routes. Use camera mode (P key) to scout rooms safely. Equip a knife for faster movement between fights.

Step 1: Reach Farm Town Office basement

Complete Jeff's quest line and build the basic workbench to unlock Xiaoming as a merchant. Farm two Level 1 passes to complete Copy Pass quest, enabling unlimited pass purchases.​

Travel to Farm Town via ferry (5,000 currency) or build the teleporter for fast travel (250 currency). Navigate to the Farm Town Office and descend to the basement entrance. Insert a Level 1 pass at the scanner.​​

Step 2: Clear B1 systematically

B1 contains loot rooms, teleport beacons, and extraction points. Defeat scientists, guards, and hobos who drop Level 2 Cards. Search tactical crates, safes, and office furniture.​​

Spider robots patrol B1, dropping Computing Cores needed for storm resistance quests. They spawn more frequently at night and require armor-piercing ammunition.​

Step 3: Explore B2 for premium loot

B2 requires Level 2 Cards and houses invisible enemies that deal massive damage. Equip heat-detecting goggles or electrified MP7 with electric resistance gear.​​

Target Graphics Cards ($10,500), Military Radios ($628), J-Lab Floppy Disks ($419), and Power Banks ($405). B2 vaults contain weapon blueprints and endgame gear.​

Step 4: Access color-coded rooms

Red and Blue rooms contain weapon blueprints and rare materials. Green Card rooms spawn additional J-Lab cards. Yellow Card rooms sit near B2 prison cells.​

Farm mysterious X and O buildings for alternative card sources. X building yields Blue and Black cards. Both locations provide 10-use keys worth keeping rather than selling.​

Step 5: Defeat the Roadblock boss

Clear eight fast enemies near containers before the boss activates. Bring Tier 4-5 armor, healing items, and strong weapons like the MDR.​

Boss drops include Level 3 Certificates, rare blueprints, and high-value electronics. Clear surrounding areas first to avoid fighting multiple groups.

Store valuable finds in the dog's inventory. It remains protected even if the player dies. Use backup saves through Main → Save → Restore Backup for catastrophic losses.