BLUE CARD
Verified for the August 2026 patch · updated Aug 20, 2026
Where to Find a Blue Keycard
Blue cards are the reward for running green puzzles. There is no desk that spawns them — you earn one, trade for one, or take one off a body.
Every blue card source
- Satellite Dish — green puzzle loot room
- Sewer Branch — green puzzle loot room
- Harbor (both variants) — green puzzle loot rooms
- Underwater Labs — green-tier modules
- Small Oil Rig / Large Oil Rig — scientist drops and card rooms
- Outpost vending machines (stock rotates)
What a blue card opens
Blue puzzle doors at Airfield, Train Yard, Power Plant, Water Treatment, Arctic Research Base, Small Oil Rig's card room, and blue modules in Underwater Labs.
Run a blue puzzle
- Airfield 2 fuses · 10+ rad protection
- Arctic Research Base no fuse · Cold protection instead
- Power Plant 1 fuse · 25 rad protection
- Train Yard 1 fuse · 25 rad protection
- Water Treatment Plant 1 fuse · 25 rad protection
Blue cards — quick answers
- What's the fastest blue keycard route?
- Gas station (green card) → Satellite Dish or Sewer Branch with one fuse. Ten minutes round trip on most maps, no radiation gear needed.
- How many swipes does a blue card last?
- About 4 swipes, same as green. Red cards are the fragile ones at 2.