In Overfreight on Roblox, the sand production boost is activated by routing raw sand from a Sand Theft Operation directly into a special facility called Criminal Sand Eaters. This delivery yields no direct cargo sale profit, but it applies a production multiplier to your sand operations so downstream manufacturing facilities stay supplied.
Maintaining or cutting this connection also ties directly into two in-game badges: "A bad deal" and "WHAT".
How the Sand Production Boost Works
Under normal conditions, a Sand Theft Operation produces sand without requiring any raw material inputs. However, advanced production lines consume high volumes of sand, often creating bottlenecks along your track network.
| Facility / Method | Input Required | Output / Production Effect | Direct Delivery Profit |
|---|---|---|---|
| Sand Theft Operation | None | Raw Sand | Standard cargo payout |
| Criminal Sand Eaters | Sand | Boosts sand production rate (2x observed in gameplay testing; 3x documented on NamuWiki) | None |
| Passenger Station Link | Passengers | Doubles production rate of the connected industry | Passenger delivery payout |
| Unbreakable Glass Facility | Sand + Coal | Tempered Glass | Standard cargo payout |
| Low Quality USB Chargers Plant | Copper Ingot + Iron Ingot + Sand | Electronics | Standard cargo payout |
When delivering to Criminal Sand Eaters, keep the following mechanics in mind:
- Dedicated intake only: Criminal Sand Eaters accepts only sand. Attempting to feed other goods will result in invalid or stalled routes.
- Zero direct cargo profit: The train unloading sand into Criminal Sand Eaters does not produce standard freight delivery earnings for that cargo drop.
- Production multiplier: Once sand arrives at Criminal Sand Eaters, the sand production boost activates for the supply site. Community testing records an additional 2x boost, while NamuWiki data lists up to a 3x increase in sand output.
- Stacking with passenger lines: Connecting passenger service from a passenger station to your Sand Theft Operation independently doubles facility production speed, allowing your network to satisfy heavy sand demands even faster.
Step-by-Step Route Setup for Criminal Sand Eaters
To set up the boost correctly without blocking the rest of your industrial lines, configure your track network using the following steps:
- Complete the initial game tutorial to unlock basic track laying and operational tools.
- Build track connecting your Sand Theft Operation extraction site toward Criminal Sand Eaters.
- Research Multiple Train Operation (costs 6 stars) to unlock the Signalling tool in the build menu if you plan to share mainline tracks between industrial freight and your booster delivery trains.
- Assign a train to haul sand directly from the Sand Theft Operation to Criminal Sand Eaters.
- Set up secondary split tracks or separate trains running from the boosted Sand Theft Operation toward your commercial processing plants, such as the Unbreakable Glass Facility (which requires sand and coal) or the Low Quality USB Chargers Manufacturing Plant (which requires copper ingots, iron ingots, and sand).
Sand-Related Badges: "A bad deal" and "WHAT"
Interacting with Criminal Sand Eaters unlocks two distinct track management badges:
A bad deal
- Official description: Activate sand production boost by delivering sand to a special industry.
- Unlock condition: Complete a successful sand delivery run to Criminal Sand Eaters.
WHAT
- Official description: Time to fix some tracks as a result of this...
- Unlock condition: Cut off the sand supply to Criminal Sand Eaters after having it active, and wait on your network. The disruption triggers track damage that you must subsequently repair.
Map Locations for Sand Lines and World Connections
The layout of sand facilities and nearby network junctions varies across the maps available in Overfreight:
| Map | Difficulty | Key Landmark Locations |
|---|---|---|
| Flatlands | Easy | The World Connection sits directly next to the iron mine and the sand industry. The red criminal industry is located near the illegal copper mine and copper plant. |
| Twin Peaks | Normal | The red industry is situated near the illegal copper mine and right next to the coal mine. |
| Mountain Insanity | Hard | The World Connection is located near the second deforestation volunteer site, while the red industry sits near the iron mine. Building tracks over water is disabled on this map. |
Daily Tasks Involving Sand
In addition to feeding manufacturing chains, sand deliveries frequently appear in shop daily tasks. For instance, players may receive objectives such as hauling 8,000 tons of sand to earn 10 free diamonds (gems). Activating the sand production boost and linking passenger lines ensures you have sufficient extraction volume to meet high tonnage requirements before daily timers expire.
Frequently Asked Questions
Does Criminal Sand Eaters pay money for sand deliveries?
No. Criminal Sand Eaters provides zero direct delivery income. Its sole utility is activating the high-volume sand production multiplier across your network.
How do I unlock the "WHAT" badge?
Supply Criminal Sand Eaters with sand so the boost is active, then intentionally sever or stop the sand supply line. Waiting after cutting off supply triggers track breakage and awards the badge.
Can I feed raw iron directly into a steel mill along with sand lines?
No. Overfreight strictly rejects invalid routes. Iron ore must first be smelted into iron ingots at an Iron Smelter from 1870 before reaching the Totally Safe Steel Melting Plant. Routing raw iron directly triggers the "Logistical nightmares" failure badge.
