Sandustry How to Break Crackstone

Crackstone is a hard progression gate, not a resource node: per the official wiki entry, it only breaks with explosive damage, and the shovel and standard gun leave it untouched. The practical way to break crackstone is the Rocket Launcher, researched in the Guns branch — the same official entry confirms the launcher destroys the block. If your tools do nothing to a pale wall segment underground, stop upgrading your mining speed: no amount of digging efficiency will ever break crackstone, and players who learn how to break crackstone barriers early open up the richest detours on the map.

Recognizing crackstone in the wild

Crackstone shows up as pale, unminable wall segments sealing tunnels — you usually meet it as the first surface that shrugs off tools you trusted everywhere else. Demo-era reports place one barrier along the map's right edge, and Early Access buries more of them along the deep routes. The identification test takes ten seconds: dig at the wall, then shoot it with the standard gun. A wall that ignores both is crackstone, and the only real question is when, not whether, you break crackstone open. Recorded runs treat each confirmed wall as a waypoint: mark it, keep digging elsewhere, and come back to break crackstone once the launcher is home.

Getting to the Rocket Launcher

Expect the launcher to sit deep enough in the branch that a shaky gold line will stall you. That is deliberate design: the game checks your factory before it opens the map.

Affording the launcher without stalling

The demo-era thread that made crackstone famous has a second half everyone forgets: after one player asks how anyone affords the launcher, the community answer is simply a bigger money bin and more wet sand shaken into gold. That is still the correct response in Early Access. Before you break crackstone you should be earning, not saving — a shaker line plus a press-fed second stream refills the research cost quickly, while picking up loose nuggets by hand does not. If the price in your research menu looks intimidating, read it as a signal to finish the early factory steps of the roadmap first.

Two habits make the purchase painless. Keep your gold boxed and your box oversized, because recorded runs routinely overflow small containers and lose counting time to rebuilding. And do not rush the Guns branch before a burn lane exists — the launcher doubles as a mining tool, but the gold that buys it comes from burning and pressing slag. Note that the launcher's upgrades — incendiary warhead first, then firing rate — are bought with fluxite after purchase, so they never compete with research gold.

Aiming the shot: rockets are not scalpels

One safety note from recorded play: rockets reshape terrain indiscriminately. The blast that opens your barrier also opens whatever sits behind or beside it, so clear anything you care about from the blast zone first. The classic disaster is firing near a water reservoir perched above your lava works — the impact flashes water to steam, the steam rains back down, and the rain extinguishes lava pits you spent real time building. Veteran footage advises shooting downward whenever the geometry allows, precisely because stray steam is so hard to undo.

That same raw power is why the launcher doubles as the game's fastest mining tool, and why recorded runs upgrade it once the water situation is solved: an incendiary warhead turns shots into free steam for reservoirs, and firing-rate upgrades reduce ore veins to rubble in seconds. None of that is required to break crackstone — a stock rocket is enough — but it means the purchase is almost never wasted.

What happens after it breaks

Nothing drops. Crackstone's only function is to hold territory closed until you arrive with explosives, so the payout is access: a demo-era player thread describes a crackstone barrier sealing the right edge of the map, with several more areas — and the resources inside them — opening up once it fell. In Early Access those sealed pockets are where artifact hunting begins, and the puzzles behind them alter how your mining works, so keep the Artifact guide handy for what comes next.

One practical note for the moment itself: break crackstone, step a few tiles in, and light the area before you celebrate. The pockets are dark and deep, and descending without a light or grapple plan is how fresh openings turn into rescues.

When it still will not break: troubleshooting

Five states cover nearly every stuck player, and each has a different fix:

• Your tool does nothing at all. You are using the shovel or the standard gun. Neither works, no matter how upgraded — only explosive damage can break crackstone, full stop.
• You cannot find the launcher in research. It lives deep in the Guns branch, and the earlier nodes are prerequisites. The real unlock requirement is a gold income that can climb the branch.
• The price looks wrong. Research costs have moved between demo and Early Access builds. Trust the in-game research menu, never a screenshot — including anything captured on a fan site.
• A guide told you a gun works. That source is describing a different block, or it is simply wrong; the official entry rules out non-explosive gun damage explicitly.
• You broke it and got nothing. Working as intended. The block drops nothing; the territory behind it is the reward.

A naming warning

A community thread from release day refers to breaking something called "shatterstone" with a gun. No official source equates the two names, and the official crackstone entry flatly rules out gun damage. Until the developers clarify, treat "shatterstone" as a different block — and if a gun genuinely breaks what you are looking at, you are not looking at crackstone, and nothing on this page about how to break crackstone applies to it.

Once you break crackstone for the first time, the map stops feeling like a box. Treat every pale wall after that as a promise: something worth having sits behind it, and your factory already knows how to pay for the key.