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Base Defence and Raiding in ROB RUN: Fuses, Decoders and How Many You Need

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Guide
Written by Danneh
Posted on November 7, 2026
Categories:
ROB RUN

Every building on a base has its own security system. Owners protect it with Electronic Fuses, and raiders break it with Decoders. Bring a building's defence down to zero and you get into it. This guide covers how defence is worked out, what each fuse and decoder does, and exactly how many decoders each building takes.

Electronic Fuse, Decoder and Master Key

How base defence works

  • Base protection. Every building starts with some defence before you add anything: 5 for a Trailer, 30 for a Mansion.

  • Fuses. Open the security panel on the building's wall and put fuses in its slots. Each fuse adds its points to the defence.

  • Decoders. A raider starts a hack at the same panel. Fitting a decoder takes 12 seconds, removes its points from the defence, and is used up.

  • Full hack. At zero defence the building is hacked: every door, gate and window opens for a while, and the base gets a raid block that stops some actions.

  • Repair. The owner repairs the panel afterwards. Fuses are not destroyed in a hack, so the full defence comes back.

Decoders do not open safes or security cabinets inside a building. Those need a Master Key.

Decoders

Decoder

Removes

Notes

Decoder (uncommon)

Decoder (uncommon)

1 point

The basic decoder

Decoder (epic)

Decoder (epic)

3 points

Barter 3 uncommon Decoders + $10,000, or trade a filled Action Camera

Decoder (legendary)

Decoder (legendary)

5 points

The strongest decoder

Barter happens at the Suspicious Door in Lenny's Motel.

Electronic Fuses

Fuse

Adds

Research

Price

Tier

Electronic Fuse (uncommon)

Electronic Fuse

1 point

$10,000

$20,000

I

Electronic Fuse (epic)

Electronic Fuse

3 points

$150,000

$100,000

II

Electronic Fuse (legendary)

Electronic Fuse

5 points

$500,000

$250,000

III

You can also barter an epic fuse plus $250,000 for a legendary one.

How many decoders each building takes

"Max defence" is every slot filled with a legendary fuse. The decoder columns show how many uncommon / epic / legendary decoders it takes to reach zero.

Building

Base

Fuse slots

Max defence

Decoders, no fuses

Decoders, all legendary

Trailer

5

9

50

5 / 2 / 1

50 / 17 / 10

Small House

15

27

150

15 / 5 / 3

150 / 50 / 30

Mansion

30

42

240

30 / 10 / 6

240 / 80 / 48

Car Garage

4

6

34

4 / 2 / 1

34 / 12 / 7

Large Car Garage

6

12

66

6 / 2 / 2

66 / 22 / 14

Warehouse

10

15

85

10 / 4 / 2

85 / 29 / 17

Workshop

5

9

50

5 / 2 / 1

50 / 17 / 10

Grow Room

5

9

50

5 / 2 / 1

50 / 17 / 10

Chemical Laboratory

3

6

33

3 / 1 / 1

33 / 11 / 7

Mesh Fence

2

3

17

2 / 1 / 1

17 / 6 / 4

Metal Fence

5

6

35

5 / 2 / 1

35 / 12 / 7

Concrete Fence

10

9

55

10 / 4 / 2

55 / 19 / 11

Work it out yourself: add the base protection and every fuse's points, then divide by the decoder's points and round up. A Small House with 10 epic fuses has 15 + 10 × 3 = 45 defence: 45 uncommon, 15 epic or 9 legendary decoders.

A Farm Fence has no defence and cannot be hacked.

Alarm Systems

Each security panel also has 3 alarm slots. Alarms add no defence; they warn you that a hack has started.

Alarm

Warns

Research

Price

Tier

Location alarm

Alarm System

Everyone at the location

$15,000

$30,000

I

Personal alarm

Alarm System

You

$25,000

$60,000

II

Clan alarm

Alarm System

You and your whole clan

$50,000

$200,000

II

Defence tips

  • Fuse the buildings that make money first. The Chemical Laboratory (base 3) and Grow Room (base 5) are the easiest targets on most bases.

  • A clan alarm is worth it if your clan is online: a hack takes 12 seconds per decoder, which is time for help to arrive.

  • Close your front door when you leave.

Raids and eviction

While a base is being raided, its vendors, Black Market and Shipment unlocks are blocked. An Eviction Right, bartered for 50 epic Decoders, goes on a plot plan and evicts its owner: they lose the property on that plot and you can take some of it. Eviction needs every security system on the base fully hacked.

Related: Grow Room guide and Laboratory guide.

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