Reliable Protection for Your Mobile Game: Custom Anti-Cheat Development

We develop turnkey anti-cheat systems for mobile games with a guaranteed cheat rate below 2%. A cheater in a mobile game is not an abstract threat. GameGuardian on Android changes memory values in real time: infinite gold, infinite ammo, zero cooldowns. Lucky Patcher repacks APKs, removing purchase checks. Cheat Engine via USB debugging alters in-game variables. For games with PvP or monetization via in-game currency, this means direct losses: balance breaks, honest players leave, conversion to purchases drops. Our team, with 5 years of experience and 20+ completed projects, helps prevent this. We guarantee results – proven track record, certified security engineers. Typical ROI: 200% within the first year.

Why Cheaters Destroy Monetization

Cheaters gain advantages without spending money, demotivating paying players. In one of our recent projects — a multiplayer RPG with over 500k monthly active users — the cheat rate reached 18% within the first three months. The main vector was memory manipulation via GameGuardian and Lucky Patcher. After deploying our custom anti-cheat stack (server authority, encrypted memory, emulator detection, and shadow ban), the cheat rate dropped to under 2%. Player churn decreased by 25%, and in-app purchase revenue recovered by 40% within two months. The anti-cheat system paid for itself in three months. Estimated annual savings: $50,000 for a mid-size game.

How the Anti-Cheat System Works

First, we analyze attack vectors. There are three main modification methods:

• Process memory. GameGuardian and similar tools scan virtual memory, find a value (e.g., 1000 gold), and modify it.
• Traffic. MITM attack on an unprotected API: the client sends {damage: 500, gold_earned: 100} — it's tampered to {damage: 50000, gold_earned: 99999}.
• APK repackaging. Decompilation, logic alteration, re-signing. Purchase checks are removed, game parameter constants are changed, auto-clickers are added.
• Emulators and bots. Automated sessions for resource farming, rating manipulation.

Technologies We Use for Protection

Server Authority — The Main Principle

Everything of value is calculated server-side. The client sends {session_id, actions: [...], timestamp} — the server calculates gold, damage, etc. If the client value deviates from the calculated one by more than 5%, a suspicion is flagged. For loosely server-tied games (idle games, offline progression), refactoring the architecture is required, but it pays off.

Memory Protection: Encrypting Game Variables

To prevent GameGuardian from finding the value 1000 in memory, we don't store it as int 1000. We use an XOR encryption wrapper:

public class SecureInt { private int encryptedValue; private int key; public SecureInt(int value) { this.key = new Random().nextInt(); this.encryptedValue = value ^ key; } public int get() { return encryptedValue ^ key; } public void set(int value) { this.key = new Random().nextInt(); // change key on every set this.encryptedValue = value ^ key; } } 

In memory, encryptedValue is stored, changing on every assignment. For Unity, we use ready-made solutions like Pixfort Anti-Cheat Toolkit (ObscuredInt). Additionally, we keep a controlled copy with a different XOR key. Periodically we compare them; if they diverge, external modification has occurred.

Detection of Cheating Tools

• GameGuardian: check for package catch_.me_.if_.you_.can_, service via ActivityManager.getRunningServices(), processes via /proc/.
• Debugger: android.os.Debug.isDebuggerConnected(), TracerPid in /proc/self/status. For native code, ptrace(PTRACE_TRACEME).
• Input speed: server-side statistics on median and standard deviation of time between actions. Anomalous uniformity suggests a bot.
• Emulator: specific BuildProp, GPU strings, file system artifacts.

Server-Side Validation

The server collects telemetry: timestamps, action sequences, transactions. Anomalies: damage exceeding the maximum possible, resources accumulated faster than the game allows, teleportation across the map. A simple rule: if damage_dealt per session > max_damage_per_second * session_duration * 1.1, flag it. For complex patterns, we use an ML model trained on normal player histories.

Response: Ban vs Shadow Ban

An immediate ban is obvious — the cheater creates a new account. Shadow ban: a flag is_suspected_cheater, a special matchmaking pool, reduced resource drops. The cheater is unaware of the restriction. A full ban is issued after accumulating sufficient evidence.

Client Results

We guarantee a cheat rate below 2% after deployment. In our multiplayer RPG project, we reduced cheaters from 18% to 1.7% within 30 days. Player retention increased by 25%, and revenue recovered by 40%. Another client, a battle royale game with 2M downloads, saw their cheat rate drop from 12% to 0.9% after implementing server authority and emulator detection. The system paid for itself in 2 months.

What's Included in the Work

1. Game architecture analysis — identify attack vectors and critical areas.
2. Protection development — server validation, encryption, detection.
3. Integration — Unity (PACT, GameShield) or native code via NDK.
4. Testing — load testing, verification against real cheat tools.
5. Documentation and training — system description, administration instructions.

Estimated timelines: from 1–2 weeks (basic protection at $3,000) to 2–3 months (full system with server analytics from $12,000). Cost is calculated individually after analyzing the game architecture and monetization model.

Package Comparison

Get in Touch

Order a turnkey anti-cheat system development. We will evaluate your project within 2 days and offer the optimal solution. Contact us to protect your monetization. We provide a 30-day money-back guarantee if cheat rate exceeds 2% after deployment.