Totally Safe Moon Project Tower Building Tips

What makes a good tower?

Steam sells the game as Only Up-style climbing where you are the architect: you pick props, aim them with the Gravity Gun, and hope the stack survives jumps. There is no blueprint score, only the NEXT GOAL on your meter and a path everyone can walk.

Strong stacks in official screenshots share three traits:

1. Wide landings spaced often (bus roofs, house tops, fence panels laid flat).
2. Upgrade timing so the Gravity Gun can lift the next size tier before you need it (gravity gun upgrades).
3. Co-op handoffs so one player keeps footing while another attaches the next piece (multiplayer co-op).

Campaign order lives in the walkthrough.

How do you read the height meter?

Steam achievement names fix many milestone heights (10 m through 425 m). During a run the HUD shows NEXT GOAL values that can jump higher (marketing shots include 500 m and 825 m).

Pause near a milestone if you need Goal Reached payouts for upgrades. The next trophy height and the HUD number overlap but are not identical lists.

Image: Steam store screenshot, Fake Moon / rokaplay select.

How do you place pieces with the Gravity Gun?

allthings.how (October 2026 gameplay explainer) and the 9Puz walkthrough (RoboDessert recording) agree on the core prompts:

• Pick Up Object lifts a prop; Attach Object and Throw Object are separate actions on the HUD.
• Q drops what you hold.
• Hold R to rotate while carrying.
• The scroll wheel moves the held object closer or farther away.

Official screenshots also label the red tool Wrench on the hotbar while the Upgrades menu calls it Gravity Gun (gravity gun upgrades).

Early stack tips that follow those controls:

• Lay fence sections flat before you go vertical.
• If you can see a ledge but cannot jump to it, add a lower ramp instead of steepening the only bridge.
• In co-op, call out which platform you are standing on before someone grabs the prop beneath you (9Puz warns this knocks climbers off).

When do vehicles and buildings enter the stack?

Screenshots show whole houses, school buses, and trucks in mid-air once the route leaves suburbia, matching Steam’s promise that rewards escalate as you climb.

Without published weight tables:

• Upgrade when You can upgrade! appears and Pick Up starts failing.
• Prefer long horizontal surfaces (bus spines, house roofs) as floors.
• Rotate buildings so a roof plane meets your current landing.

Image: Steam store screenshot, Fake Moon / rokaplay select.

Which tools change routing?

Steam confirms a Gravity Gun; screenshots show extra gadgets on the hotbar after New Item unlocks.

Verified uses from official media and allthings.how:

Unlock order follows milestone rewards. Check your bar after each New Item popup instead of assuming a fixed tree.

What about clouds and extreme height?

Steam lists clouds as build material. Screenshots show stacks of buildings and vehicles far above the mountains with multiple players on separate roofs.

Image: Steam store screenshot, Fake Moon / rokaplay select.

The I’m Your Biggest Fan achievement confirms you can pick up a windmill, the heaviest object named on Steam. Treat it as a bulky anchor, not a default floor tile.

How should co-op teams divide labor?

Steam allows four players online, but the store page documents no official role system. What the screenshots do show: four characters standing on different vehicles of the same stack, and a co-op partner using the Hook tool on a tilted house or vertical bus. Treat any split of jobs as your own table rule, not a game mechanic.

Two practical habits that follow from that:

• Let one player at a time place and attach, so two people do not fight over the same piece.
• Keep teammates on stable roofs while someone attaches; the Magnet can pull a teammate who fell short of a landing (walkthrough, multiplayer co-op).

allthings.how notes slapstick grabbing between players, so agree who is attaching before you start.

What is not confirmed yet?

• Mass limits per Gravity Gun level
• Exact physics for windmills, clouds, or ziplines beyond what appears in player recordings
• Whether Unlock Random at the Upgrades terminal appears in every build (mentioned on allthings.how only)

Interactables beyond building props are listed on objects and secrets as we verify them.