Asteroid Rain in Totally Safe Moon Project is a named hazard event, not a background effect: meteors streak across the sky and hit whatever you have built, and a single shower has been reported to take out about a third of your entire tower. It has a clear start and a clear end — the achievement "A Rainy Day" reads "Survive Asteroid Rain for the first time" — and surviving it means putting the missing section of your stack back.

Totally Safe Moon Project asteroid rain: what the event does

The change of pace is the point. Until the first shower arrives you are met with practically no resistance at all, and then the sky starts dropping rock on the structure you spent an hour building. One player who played through it described how a single meteor shower took out around a third of the whole tower.

While it runs, the asteroid itself is the reason for the rain: it hangs over the town as a glowing red-pink rock, and streaks of light cross the sky around it.

What the shower costs you is decided by the stack you built, so the more careful your placements, the less of the climb you lose — the tower building guide covers how to place props so a lean does not become a collapse.

Rebuilding what it took

Nothing about the rebuild is different from the first build. The props come out of the same town, you carry them with the same gravity gun, and the height meter and the "NEXT GOAL" banner still show the same checkpoint you were working towards before the shower hit.

The difference is that a third of your work is on the ground in pieces, so expect to spend points again before you can spend them on anything else. The upgrades guide covers what those points buy.

The other thing that hits your build

Meteor showers are the loud one, but saucers are the one that happens while you are working. UFOs hover over the streets with a green tractor beam that lifts props and players off the structure mid-build, and they are also the reason to keep a weapon in your hands: the gravity gun's Shoot mode is what takes them down. The UFO guide has the shot.