Decoder

The Decoder (Kefir also calls it a breach decoder) is the item that opens rival bases in ROB RUN. It is plugged into another player's Security System and grants temporary access to the building, not ownership of it.

At a glance

Type

Raid toolSource 1

Used on

A rival player's Security SystemSource 2

Effect

Temporary access to their buildingSource 3

Stack size

Raised in the Nov 4, 2026 patchSource 4

How to get

• Not sold off a shelf Kefir's FAQ says the breach decoders needed to break into a base are not bought off a shelf, so raiders have to pick targets carefully. The exact source has not been published.Source 1

Where to find

No official spawn list exists for Decoders yet. We will add buildings and counts only once Kefir or the user-provided dataset confirms them.

What it's worth

High value for raiders; keep every one you find.

Best stage: Mid game, once you are hunting other players' bases rather than city shops.

• Kefir ties decoder scarcity directly to raiding: because they are not sold off a shelf, raiders have to pick their targets wisely instead of hitting every base they pass.Source 1
• The Nov 4 patch increased the maximum stack size for decoders, so carrying several for one raid now takes less inventory.Source 2

How to use

• Apply it to a rival's Security System to get into their building. Move fast: owners can repair the system and lock you out again.Source 1
• Bases with fuses installed in the Security System take far more time and resources to hack, so check your target's defenses before committing.Source 2
• A Decoder does not delete a base. Wiping a base off the map needs a separate, extremely rare loot-only item.Source 3

Related items

Sources