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Screenshots

  • Protocol 4: Code Breaker PvP screenshot 1
  • Protocol 4: Code Breaker PvP screenshot 2
  • Protocol 4: Code Breaker PvP screenshot 3
  • Protocol 4: Code Breaker PvP screenshot 4

About Protocol 4: Code Breaker PvP

Crack the code before your rival does. Protocol 4 is a hacker game of pure deduction. Every guess gives you signal readings; you break the passcode with logic, not luck. Play solo, take on the Daily Operation, or duel another operator in real time. REAL-TIME PvP DUELS Race: one passcode, two operators. First one through wins. Standoff: each of you sets the code the other must break. Two codes, one clock, and you watch them close in on yours. Outsmart your rival and claim the reward. DAILY OPERATION A new code every day, the same for everyone. Crack it, climb the daily leaderboard and earn double XP. BUILD YOUR EMPIRE Assemble mining rigs, expand your vault, and run overclocks. Your network keeps earning credits while you are away. SYNDICATES AND TERRITORY Join one of three syndicates, claim territory on the map, and take your share of the pot that every raid feeds. RAIDS Break into a rival operator's grid and take what they left unguarded, then set your own defenses before they come for you. GLOBAL LEADERBOARD Earn XP and climb fifteen ranks to become the ultimate Server King. MORE WAYS TO PLAY Quick Hacks for fast action, Training to sharpen your deduction, and 18 career contracts plus fresh daily missions. ARSENAL OF TOOLS Oracle Scan, Double XP and more hacking tools to gain the upper hand when a code will not give. Play in English, Turkish, Spanish, French, German or Portuguese, on iPhone and iPad. Are you ready to initiate Protocol 4?

What’s new

Version 3.0.1 · Updated October 5, 2026

A refreshed App Store page. The game itself is unchanged: Standoff duels, raids and syndicates are right where you left them. See you in the duel lobby, operator.

Play today's Queens puzzle

One queen in every row, column and color. A free daily puzzle from Fiplay, same board for everyone. It plays right here, no download.

More Queens and other daily puzzles on Fiplay →

App privacy

The developer, HAKAN OZGER, reported these privacy practices to Apple.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Purchases: Purchase History
  • Identifiers: Device ID
  • Usage Data: Product Interaction
  • Diagnostics: Crash Data

Data Linked to You

The following data, which may be collected and linked to your identity, may be used for the following purposes:

  • Purchases: Purchase History
  • User Content: Other User Content
  • Identifiers: User ID, Device ID

Used for: App Functionality

Data Not Linked to You

The following data, which may be collected but is not linked to your identity, may be used for the following purposes:

  • Identifiers: Device ID
  • Usage Data: Product Interaction
  • Purchases: Purchase History
  • Diagnostics: Crash Data

Used for: Third-Party Advertising, Analytics

Alternatives to Protocol 4: Code Breaker PvP

Looking for apps like Protocol 4: Code Breaker PvP? Here are 6 similar apps on the App Store. The highest rated is Scribbles Now (5.0/5), and 5 of the 6 are free to download.

Protocol 4: Code Breaker PvP vs. alternatives
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