The Dome puzzle

Overview

For years the Dome was only a parkour climb to a few crates at the top. The October 2025 update gave it a proper green-card puzzle at ground level, which makes it a reliable blue-keycard source. The climb is still there once you have the card.

Insert the fuse on the east side

The fuse box is at ground level on the east side of the Dome. Insert your Electric Fuse.

Flip the switch

The switch is a couple of metres from the fuse box. Flip it and the green reader goes live.

Walk round to the green door

Go round the base of the Dome to the north side. The green-card door is next to the recycler — about 70 metres from the fuse box. Swipe green.

Take the blue card

Inside: the blue keycard, a blueprint fragment and the office crates. The recycler is right outside — use it before you climb.

Optional: climb to the top

The spiral walkways and ladders run up the outside of the sphere to military crates at the apex. One bad jump is a fall to your death, and you are visible from across the map while you climb.

• Falls on the Dome climb are fatal. Do not climb with anything you cannot afford to lose.

Related tools and guides

• The island power grid
• Satellite Dish puzzle