Sandustry How To Break Crackstone

To break Crackstone in Sandustry, you need the Rocket Launcher — it is the only confirmed tool that works. Developer Lantto confirmed in a Steam discussion that ordinary tools can't touch it, and every source that covers Crackstone agrees: it only responds to explosive damage. Published coverage of Crackstone is nearly nonexistent — one dedicated guide, zero Steam guides, zero YouTube videos — so where a detail comes from a single source we flag it, and Early Access numbers can shift between patches (verify in current build).

The only tool that works: the Rocket Launcher

The short answer is one line: equip the Rocket Launcher, back off to a safe distance, and fire. Crackstone only responds to explosive damage, and the Rocket Launcher is the tool that delivers it. This is the most agreed-upon fact about Crackstone in the community — the developer's official reply, a demo-era player reply, sandustry.org, and the dedicated sandustry-wiki.wiki page all state it with no disagreement.

The standard tool comparison, per the dedicated guide:

• Shovel — No. It deals digging damage, which Crackstone ignores.
• Gun — No. It deals non-explosive ranged damage, which Crackstone also ignores.
• Rocket Launcher — Yes. It provides the explosive damage Crackstone requires.

This matches sandustry.org's framing: the Rocket Launcher is "necessary for destroying crackstone — a barrier material that regular weapons can't break."

Why shovels, guns, and drones can't break it

Crackstone resisting regular weapons isn't player folklore — it's confirmed behavior. In a February 2025 demo-era Steam bug thread, a digger drone launched against an explodable wall exploded endlessly without digging anything, stalling the game into a lag machine. Developer Lantto replied that the digger drone takes no damage from Crackstone (a bug), and that the only solution is to blow it up with the Rocket Launcher to free it. He said a fix would be included in the next patch.

Because that thread is from the demo era, don't assume the exact behavior is identical in the current build (verify in current build). The part that survives across all sources is the design intent: regular weapons can't break Crackstone, so attacking it with a shovel or gun only wastes durability. Don't use the Rocket Launcher as a daily mining tool either — bring it out when you hit a Crackstone wall.

Unlocking the Rocket Launcher

The Rocket Launcher sits deep in the research tree, and the few sources that cover it disagree on the exact position and cost. The dedicated sandustry-wiki.wiki page, verified August 13, 2026, places it at Tier 4 with a listed cost of 2,000 Gold. A demo-era Steam reply (February 2025) also quotes "2k Gold." sandustry.org, by contrast, lists it under Guns 2 research at 1,000+ gold. The honest summary: roughly 1,000–2,000 gold, in the late Guns / Tier 4 part of the tree (verify in current build).

The gold gate is a real pain point. "How am I going to get 2k Gold?" is a verbatim complaint from the Steam discussion thread. Two things soften it:

• The unlock is one-time; you buy the Rocket Launcher once and it's yours.
• Crackstone is a barrier you hit occasionally, not a material you mine all day, so you won't constantly need new shots.

That's a meaningful chunk of early-game income, which is why the dedicated guide recommends confirming you actually need it before spending (see the checklist below).

Where Crackstone blocks you

Crackstone is a natural terrain material designed to gate progression. It walls off parts of the map and, in at least one demo-era playthrough, blocked the path to a second relic — the player who started the thread "cannot manage to find the second relic" because they hit a Crackstone barrier "on the right side of the map" and couldn't figure out how to break it. That specific right-side position is a single seed's experience, not a general rule, so don't expect Crackstone to appear in the same spot on your map.

The other thing worth knowing before you invest: Crackstone has no material drop of its own. The official wiki currently lists no drops for it, and the dedicated guide frames it as a pure progression barrier. The reward for breaking it is access — usually to a relic, artifact, or blocked region — not a stack of new resources. Factor that in when you're deciding whether to spend the gold.

A step-by-step plan

The dedicated guide lays out a four-step route to your first Crackstone breakthrough (single source — verify in current build):

1. Stabilize gold production. Use Wet Sand and Shakers so you have a steady income to fund the research.
2. Push the research tree to the Rocket Launcher. Expect to land around Tier 4 / Guns 2, at roughly 1,000–2,000 Gold (verify in current build).
3. Unlock the Rocket Launcher once the cost is within reach.
4. Back off to a safe distance, fire, and open the path. The Rocket Launcher has a slow reload, so don't stand in the blast zone.

That route is the only comprehensive walkthrough available for Crackstone, and its claims are consistent with the shorter confirmations elsewhere.

Before you spend the gold

Because the Rocket Launcher is expensive and single-source details are thin, run through this pre-purchase checklist before you commit (from the dedicated guide):

• Check for an alternate route. Look for another open tunnel that already reaches the same area before buying a tool to break through.
• Make sure the factory can pay it back. Your production should be able to absorb the research cost without stalling your progress.
• Remember Early Access. Costs and tree positions can change between patches (verify in current build).

If you're only stuck once and an alternate path exists, skipping the Rocket Launcher is a legitimate choice — access you already have isn't worth 2,000 gold.

FAQ

Q: Can the Gun break Crackstone in Sandustry? A: No. The Gun deals non-explosive ranged damage. Crackstone only responds to explosive damage, which comes from the Rocket Launcher.

Q: Does Crackstone drop anything? A: No. The official wiki lists no drops for it; it functions as a progression barrier, so the reward is access rather than a resource stack.

Q: Why won't my digger drone break Crackstone? A: In a demo-era bug, drones took no damage from Crackstone and only the Rocket Launcher could free them; the developer confirmed this and promised a fix. Don't rely on drones for Crackstone (verify in current build).

Q: How much does the Rocket Launcher cost? A: Sources disagree: 2,000 Gold at Tier 4 (dedicated guide, verified August 2026, plus a demo-era Steam reply) versus 1,000+ Gold under Guns 2 (sandustry.org). Plan for roughly 1,000–2,000 Gold (verify in current build).

Q: Can lasers or flamethrowers break Crackstone? A: Unverified. Guides mention lasers burning through surface obstacles and flamethrowers being the most efficient tool against ice stalactites, but none of them explicitly names Crackstone. Treat the Rocket Launcher as the only confirmed option.

Q: Is there much published info on Crackstone? A: Very little. As of August 2026 there is one dedicated guide, zero Steam community guides, zero YouTube videos, and no dedicated page on the large fan wikis, so most details are single-source.