Machines are the large-scale construction tools in Stop the Tsunami. Use them when hand tools are no longer fast enough for a wide beach, a large trench, or a long defensive wall. The best choice depends on the job: Bulldozer for moving sand, excavators and trenching equipment for digging, Dump Truck for hauling, Cement Mixer for cement construction, and Lifeguard ATV for getting around the work area.
Machines improve preparation speed, but they do not replace a finished defense. Before pressing START ROUND, check the wall height, edges, gaps, trench position, and where each vehicle is parked. A machine can make a lot of terrain or material move quickly, while a misplaced machine can still block players or leave part of the defense unfinished.
Stop the Tsunami machine roles
The table below is a practical reference for selecting a machine. “How to get it” describes the supported route, while exact prices and unlock order are left out when the current game information does not establish them.
| Machine | Best use | Access | Player note |
|---|---|---|---|
| Bulldozer | Push and level large amounts of Sand | Buy or unlock in Machines | Fast for shaping a broad defense; can catch on terrain or walls |
| Mini Excavator | Dig large holes and Trenches | Buy or build after its unlock | Useful behind a wall; an excessively deep hole can stop further work |
| Dump Truck | Move large amounts of Sand or building material | Unlock in Machines | Needs room for driving and turning |
| Cement Mixer | Support Cement construction | Buy or unlock with progress | Useful for later, stronger structures; full recipe details are not confirmed |
| Sand Trencher | Cut a continuous trench | Buy in Machines | A recorded price is 300 Coins; its full efficiency comparison is not confirmed |
| Lifeguard ATV | Move quickly between beach work areas | Buy with Coins | Improves travel rather than wall durability |
| Skid Steer | Push and handle bulk material | Unlock through machine or stage progress | Listed as an upgrade, but exact conditions are not confirmed |
| Excavator | Perform larger-scale digging and terrain work | Unlock through later progress | A later upgrade from basic tools; exact model details are not confirmed |
The roles are complementary rather than a strict power ranking. A Bulldozer is the direct answer when the problem is a large pile of Sand that needs to be spread or moved. A Mini Excavator or Sand Trencher is better when the defense needs a second line below ground. A Dump Truck matters when material has to travel across the beach, while a Cement Mixer belongs to a later construction phase that uses Cement. The ATV is a movement option, not a substitute for any of those construction jobs.
Bulldozer and material handling
The Bulldozer is the most useful machine for quickly changing the shape of a sand defense. It pushes and levels a large amount of Sand, which makes it suitable for building up a broad wall, correcting an uneven section, or moving material toward a weak edge. Video evidence also shows it as a drivable machine that increases movement speed while it is being used.
Watch Bulldozer and excavator machine use
These moments introduce the construction machines discussed in this section and demonstrate the Bulldozer and Mini Excavator in use.
Treat that speed as a convenience, not as proof that the vehicle can pass through every obstacle. The machine may catch near terrain or an existing wall. Leave a clear route before starting a long push, and inspect the endpoint after the pass. A pile that looks large from a distance may still leave a low point or an opening at the side.
The Dump Truck serves a different part of the same job. It is intended to carry a large amount of material, so use it when collecting and delivering material is slower than shaping it. The truck needs more turning space than a hand tool or a small vehicle. Park it away from the wall face and leave room for players to unload, repair, or move between the first line and a trench.
The game's public description describes progression from a Spade through Shovel, Bulldozer, Skid Steer, Excavator, and Dump Truck. It also identifies Gravel, Boulders, Clay, and Concrete as later materials. This supports a general growth path from hand collection to machine-assisted construction, but it does not establish a universal price list or a fixed order for every machine panel. Use the current Machines panel for the cost and availability shown in your session.
Excavators and trenches
Use the Mini Excavator when the defense needs a substantial hole or trench rather than another pile on the surface. A trench behind the main wall gives the team another place to slow or contain water after the first line is crossed. It is most useful when its position complements the wall: leave enough room to connect the wall, move around it, and repair the defense.
The Sand Trencher is the more focused option for cutting a continuous groove. One recorded demonstration gives its price as 300 Coins and shows it being used behind a wall. That price is a useful buying reference, but it is not evidence for the prices of the other machines, and the available material does not provide a complete range, depth, or speed comparison between the Sand Trencher and Mini Excavator.
Watch the Sand Trencher dig behind a wall
This moment supports the Sand Trencher's recorded 300-Coins price and its use for digging a trench behind the wall.
Do not dig as deep or as close to the wall as possible by default. The Mini Excavator demonstration indicates that a very deep hole can produce a message that prevents continued work. If that happens, stop extending the same excavation, check whether the trench can connect to the intended defensive line, and move to a safer section rather than repeatedly trying to deepen it. A trench only helps if players can still finish and maintain the surrounding defense.
An Excavator represents the larger-scale version of this work. The Roblox game description places it in the progression after basic tools and names it alongside the Skid Steer and Dump Truck. The supplied information does not confirm its exact cost, size, unlock condition, or whether every listed excavator is a separate model. Those details should come from the current in-game panel rather than a guessed upgrade table.
Cement Mixer and later defenses
The Cement Mixer supports construction with Cement and therefore fits a later stage of beach preparation. It is not the first answer to a simple Sand pile: use the basic collection and shaping tools for that. Bring the mixer into the plan when the team has access to the relevant materials and wants to reinforce or build a structure that depends on Cement.
The relationship between machines and materials is straightforward. Players can begin by collecting Sand with a Spade or Shovel, then use machines to move, dig, and shape more efficiently. Later materials such as Stone, Clay, Gravel, Boulders, and Concrete broaden the possible construction work. The available information does not confirm the complete Cement recipe, wall durability values, or a machine-specific bonus, so do not promise that the mixer alone makes a wall immune to a tsunami.
Keep the machine role separate from the defense result. Walls still need checking after construction, and Tools such as the Tamper, Glue Bottle, and Trowel can handle local compaction, slowing, or finishing work. In a coordinated build, one player can prepare material, another can drive the machine, and another can patch edges or inspect the wall. This is usually more useful than having every player operate the same vehicle.
Choosing machines for a round
Choose by the bottleneck you can see before the wave starts:
- If Sand is available but spread unevenly, choose the Bulldozer to level and push it toward the defensive line.
- If material is far from the build area, use the Dump Truck and keep a clear approach for loading and turning.
- If the wall needs a second defensive layer, use the Mini Excavator or Sand Trencher behind it rather than digging randomly in front of the team’s route.
- If the planned structure uses Cement and the material is available, use the Cement Mixer for that construction phase.
- If the main problem is travel between work areas, choose the Lifeguard ATV; do not expect it to improve wall strength.
- If the beach has reached later material and terrain requirements, check whether the Skid Steer or Excavator is available in the current progression panel.
After placing or operating a machine, make a complete inspection. Confirm that the machine did not leave a gap at an edge, that the trench does not cut off the route needed for repairs, and that the vehicle is not parked in front of a wall or player path. Only then press START ROUND. Once the tsunami arrives, a vehicle stuck against a wall can cost more time than it saved during preparation.
Machines are especially valuable in multiplayer because the game shares the Coin wallet and machines between players. A team can divide the work into digging, driving, transporting, and wall repair. That division makes the machine choice easier: assign the machine to the job that is delaying everyone else, and keep at least one player free to verify the finished defense.
Machine prices and unlock limits
The only specific machine price established in the supplied material is 300 Coins for the Sand Trencher. The other records support their roles and broad access routes but not stable prices, exact unlock levels, upgrade multipliers, or a complete purchase order. Check the live Machines panel before spending Coins, especially after progressing to a wider beach or a larger tsunami.
The same caution applies to performance claims. The Bulldozer is shown as drivable and fast, Dump Trucks are described as carrying large amounts of material, and the Mini Excavator can make large holes. Those observations explain what each machine is for; they do not establish fixed speed, capacity, trench depth, wall strength, or tsunami resistance numbers.
The safest catalog rule is to compare the job, not the machine name. Buy or unlock the tool that removes the current preparation bottleneck, then verify the result on the actual beach. Machines accelerate construction, but the round is won by a complete, accessible defense that survives the wave.
First-time Stop the Tsunami machine questions
Which machine should I use to move a large pile of Sand?
Use the Bulldozer to push and level large amounts of Sand. Use a Dump Truck instead when the main problem is carrying material across the beach.
Is the Sand Trencher confirmed to cost 300 Coins?
A recorded demonstration gives the Sand Trencher a price of 300 Coins. Treat that as the supported reference for the demonstrated machine, and check the current Machines panel for any changed price or availability.
What should I do if the Mini Excavator will not dig deeper?
Stop extending the same hole and check whether the trench is already too deep or poorly positioned for the build. Move to a safer section and keep the excavation connected to a wall route that players can still repair.
Does the Lifeguard ATV make walls stronger?
No. The ATV is primarily a fast movement option for traveling between beach work areas. It should not be treated as a wall-strength or tsunami-resistance upgrade.
Can every machine price and unlock order be listed exactly?
No. The available machine records establish roles and some access routes, but only the Sand Trencher’s 300-Coins price is specific. Use the current in-game Machines panel for other prices, unlock conditions, and progression changes.