Full Walkthrough

Phase 1 — Toothbrush to Household Broom ($0 → ~$60)

Sign the contract, take the toothbrush from the supply wall and start sweeping right outside the station. At 0.5 kg per load and roughly a dollar per kilo, this phase is about speed, not tidiness: full strokes, short walks.

• Nail Brush ($5) → Hand Brush ($10) → Hand Brush container ($10) → Household Broom ($25) → Household container ($30).
• Learn L (rotation lock) and G (sector grid) now; you will use them for the whole game.
• Finish your first hex for the "first region" achievement and a $10 bonus. The game rounds anything above 99%.

Move on when: you can fill a 6 kg Household Broom in one pass across a hex.

Phase 2 — Wide brooms and region bounties (~$60 → ~$800)

Buy Tool Belt Slot 2 ($15), the Wide Broom ($75) and the Extra Wide Broom ($150), upgrading each once. Add Tool Belt Slot 3 ($60) and carry three brooms as three containers. At this point focus purely on finishing hexes: a whole sector takes one or two trips.

Spend the next money on the Economy tab. Market Contracts I ($120) adds 6% to every sale; Region Bounty I ($200) and II ($600) raise the hex bonus from $10 to $40. Before buying a bounty level, leave a few hexes at 90–95% so you can finish them for the bigger bonus right after.

Phase 3 — Packagers and robot vacuums (~$800 → ~$1,500)

With the Building Tool ($50), build a Packager ($100) near where you sweep and belt it home. Run far out with an empty broom, sweep on the way back, and dump into the packager in one click. Your money only rises when capsules arrive, so expect a delay with long belts.

A Robot Vacuum Mk1 ($250) cleans 19 hexes around its dock. It is slow and vanishes once its area is done, but it chips away while you work. Many runs skip the Mk1 and go straight to sand — that is the better money, and you can come back to robots later.

Phase 4 — Sand, stone and the economy tab (~$1,500 → ~$10,000)

Build a Large Solar Tracker ($300) and a Pressure Chamber ($500). Route all incoming dust through the chamber: sand sells for three times the price. This is the most important purchase of the early game and most players buy it too late.

Then add a Stone Press (≈ $1,000). It needs a dust input and a sand input, so split your incoming line: some dust goes to the chamber, the rest straight to the press. Two presses per chamber is the safe ratio. With all economy bonuses, each kilo of dust that becomes stone is worth around $9.

• Market Contracts II ($400) and III ($1,100) → +18% sales.
• Supplier Network (≈ $700) → −10% tool/container upgrades; unlocks Luna Exchange.
• Luna Exchange ($2,500) → +10% more, +28% in total.
• Upgrade the Extra Wide Broom to 55 kg (then ~110 kg). One trip now clears one to two hexes.

Phase 5 — Vehicles (~$2,500 → ~$20,000)

Build a Garage ($200) where its output can join your production line. Skip the small sweepers and buy the Lunar Sweeper ($2,500) or save directly for the Mega Vacuum Rover ($6,000). Upgrade Tuned Motors and Suction Control, set cruise control and drive very long straight lanes.

A single Mega Rover tank is thousands of kilos — far more than one line can process. Build a second identical sand/stone line, add more solar for the night, and put an overflow branch to a Packager so nothing backs up. When your money climbs by thousands per trip you are ready for robots.

Phase 6 — JONAS and the AFK nights ($20,000 → ~99%)

JONAS costs $20,000 and cleans the moon by itself, one hex at a time, forever. It fires capsules to the emptiest nearby Capsule Catcher, so build a catcher first and belt it into your factory. Leave one or two catchers unconnected near the station — unconnected catchers sell automatically and act as overflow.

• 3 JONAS + one session AFK: a visible patch around the station and enough money for more.
• ~40 JONAS: around 3% of the moon. Add factory lines as the catchers fill.
• ~100 JONAS left overnight: roughly 30% of the moon in one night.
• A few hundred JONAS spread along the frontier: the rest of the moon in a second night.

Spread new robots across unclean territory while driving the Mega Rover — robots that finish hexes near you count toward your personal "help clean" achievements. Late in this phase money stops mattering; sell raw dust and spend everything on JONAS.

Phase 7 — The last hexes, flags and sites

Around 99% the remaining hexes are scattered. Use the moon map at any station: it is a heat map with unclean hexes marked. Set up to 12 waypoints, drive out with the Extra Wide Broom equipped and finish them yourself. Cleaning the final hex triggers the ending — which is worth seeing with the sound on.

The 195 flags and 26 survey sites are separate from cleaning and usually take longer than the last 1% of the moon. Switch to the Crew Transport and follow the flag hunting guide. Visit all four outer stations for their checkpoints along the way.

How long does it take?

Players who wander more, play co-op or skip the economy upgrades commonly take 6–10 hours before income starts running itself.