ATMOSFAR: get the reactor core into the Cloud Cruiser

Quick answer

Lift the core with the Hauler Wasp's magnet, lower it through the Cargo Lift (the round hatch on the Cloud Cruiser's roof), then walk to the reactor and install it by hand. A lost core should respawn where you found it, and EA 1.0-5 and 1.0-6 fix several ways of losing it.

Changed in EA 1.0-8 · per official notesChanged in EA 1.0-6 · per official notesChanged in EA 1.0-5 · per official notes

Checked 1 Nov 2026 · before EA 1.0-11 (6 Nov 2026)What changed

How this guide was checked

Coverage: Early Access since October 29, 2026 · official Steam hotfix EA 1.0-7 October 31 · official sources checked November 1, 2026 · player reports keep their dates · not played by Kingy. Research checked 1 Nov 2026. Updated 1 Nov 2026

This guide uses the linked sources and any attributed demonstrations. Platform differences and limitations are noted with the advice they affect.

See the 8 sources
8 sources
Creator clipChecked on screen · 1 Nov 20263 steps2 moments · 0:30
  1. 59:12–59:33The Hauler over the Cloud Cruiser's round roof hatchDeliver and install it · Z1 Gaming
  2. 1:00:00–1:00:09Installing the core at the Nuclear ReactorDeliver and install it · Z1 Gaming

See it first · Deliver and install it ↓

Checked on screen · Nov 1, 2026

59:12–59:33 · 21 sThe Hauler over the Cloud Cruiser's round roof hatch
Z1 GamingFull video ↗
Credits

“We Found A HAULER AIR SHIP And A Civilization! ATMOSFAR” by Z1 Gaming · Oct 31, 2026 · Uploaded October 31, 2026 (14:29 UTC), 44 minutes after EA 1.0-6 went out; build not shown on screen, so treat it as EA 1.0-5 or 1.0-6

Independent creator · no partnership implied

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Before you start

  • Kingy has not played the game. Every line below comes from Apog Labs' patch notes or forum replies, or from at least two players' Steam reports, as marked. Patches arrive every day or two.
  • You need the Hauler Wasp first.
1

Deliver and install it

Apog Labs calls the hatch the Cargo Lift. Players report it opens as the Hauler approaches, and that dropping the core in only puts it in the ship's inventory. One player warns that a glow means the magnet is on, not that you're carrying the core. One player uses C for a cargo camera to line up the drop; another lowers it with keys 1 and 2 instead of dropping it.

  1. Pick up the core with the Hauler's magnet and check you can see the core itself under the Wasp, then fly it to the top of the Cloud Cruiser.
  2. Hover over the round roof hatch until it opens and lower the core through it. Make sure the hatch closes as you fly away.

    Checked on screen · Nov 1, 2026

    59:12–59:33 · 21 sThe Hauler over the Cloud Cruiser's round roof hatch

    Hover the Hauler square over the round opening on the Cloud Cruiser's white roof, with the objective to take the reactor core back to the ship, then climb away. “Journal updated!” appears as you leave.

    Z1 GamingFull video ↗
    Credits

    “We Found A HAULER AIR SHIP And A Civilization! ATMOSFAR” by Z1 Gaming · Oct 31, 2026 · Uploaded October 31, 2026 (14:29 UTC), 44 minutes after EA 1.0-6 went out; build not shown on screen, so treat it as EA 1.0-5 or 1.0-6

    Independent creator · no partnership implied

    Creator? Ask us to remove this

    59:12–59:33The Hauler over the Cloud Cruiser's round roof hatch
  3. Land, go to the reactor inside the ship and install the core there by hand.

    Checked on screen · Nov 1, 2026

    1:00:00–1:00:09 · 9 sInstalling the core at the Nuclear Reactor

    Walk to the reactor in the ship's red room and use the prompt to access it. The Nuclear Reactor panel should read Reactor core installed, and “Journal updated!” moves the objective on.

    Z1 GamingFull video ↗
    Credits

    “We Found A HAULER AIR SHIP And A Civilization! ATMOSFAR” by Z1 Gaming · Oct 31, 2026 · Uploaded October 31, 2026 (14:29 UTC), 44 minutes after EA 1.0-6 went out; build not shown on screen, so treat it as EA 1.0-5 or 1.0-6

    Independent creator · no partnership implied

    Creator? Ask us to remove this

    1:00:00–1:00:09Installing the core at the Nuclear Reactor
Sources for this section
2

"No cores in storage", or the core vanished

EA 1.0-5 fixes the core being lost after detaching from the Hauler's magnet and despawning in the ship's hopper. EA 1.0-6 fixes it staying in your inventory after installing, plus other delivery problems. Apog Labs says a lost core is highlighted after some time on 1.0-5 and should respawn where you found it.

Players still reported trouble around 1.0-6: a core that respawned each time it was dropped into the ship, one that fell through the map and left only green steam at its spawn, and, on November 1, one out of the magnet's reach in a corner at its pick-up site. Apog Labs asks players whose ship doesn't recognise the core to use the in-game bug reporter.

Sources for this section
3

Where players find a second core

A second core gives the ship more power. These two spots are each reported by more than one player. Drones and turrets guard the first: players warn of drones in the wreck and of turrets if the ship drifts too close to the PACE base.

WhereWhat players report
Horizon Isles, north part, the Cloud Ship GraveyardA cruiser wreck in scrap heaps on the weather-data island, away from the base, with the core in the open in the middle
Rover's HollowA junkyard on the Vagabond island where you first meet other Vagabonds, by the hydrogen area
Sources for this section

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Sources · 8Official · Reported · checked 1 Nov 2026 · Research checked 1 Nov 2026
Official ATMOSFAR Steam announcements ↗Apog Labs' announcement feed. Newest on November 1: Hotfix EA 1.0-7, October 31. Read again each run: door, frequency and reactor answers depend on these notes.Official ·
Patch: ATMOSFAR EA 1.0-5 ↗VENU-14440: reactor core lost after detaching from the Hauler magnet. VENU-14459: core despawning in the Cloud Cruiser hopper. VENU-14462: camp hub despawn. Stunner power use and Wasp fuel use reduced.Official ·
Minor update: ATMOSFAR EA 1.0-6 ↗Improved guidance for the PACE base frequency objective. VENU-13528: Striker Wasp hangar door with the fuse in Fort Hannigan was closed by default. VENU-14595: research drive not usable after building the desk early. VENU-14688: reactor core not removed from inventory. VENU-14211: camp generator would not restart from zero fuel.Official ·
HOW TO GET REACTOR INTO CLOUD CRUISER ↗Apog Labs' Sofia names the Cargo Lift, the round hatch on the Cloud Cruiser's roof, and asks players whose core isn't recognised to use the in-game bug reporter. Players describe the drop and failures.Official ·
Reactor disappeared ( Quest ) ↗Apog Labs' devl0f: on EA 1.0-5 a lost core gets highlighted after some time, and a core lost indefinitely should respawn where you found it. Players report cores falling through the map and respawning after 1.0-6.Official ·
how do you get the core in the airship? ↗7 replies. Roof hatch, cargo camera, manual install at the reactor, and one save where the core vanished.Reported ·
Anyone know where to find a second reactor core for cloud cruiser? ↗9 replies. Wreck near the weather-data site on Horizon Isles; junkyard at Rover's Hollow.Reported ·
reactor core stuck in corner ↗2 replies. Two players report the core out of the magnet's reach at its pick-up site; an Apog Labs reply asks for details.Reported ·

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