Radar Hacks Explained: See the Whole Map

What Is a Radar Hack?

A radar hack is a cheat that displays the positions of all players (and sometimes items, vehicles, and other entities) on a minimap overlay, second screen, or mobile device. Unlike wallhacks and ESP that overlay information directly on your game view, radar hacks present positional data on a separate map — much like a real military radar system.

Radar hacks are among the most popular cheats in battle royale and tactical shooter games because they provide massive strategic advantage while being nearly impossible to detect visually. A spectator watching your gameplay sees completely normal crosshair movement and decision-making — they can't see the radar on your second monitor or phone.

Types of Radar Hacks

1. Internal Radar Overlay

The simplest form: a minimap drawn directly on your game screen, typically in a corner. The cheat reads player positions from game memory and renders dots or icons on the overlay. This is the easiest to set up but the most visible — anyone spectating can see the radar on your screen.

Internal radars typically show:

• Enemy positions as red dots
• Teammate positions as blue/green dots
• Your position and viewing direction as a centered arrow
• Distance to each player (in meters)
• Optional: player names, health bars, weapon info

2. External Radar (Second Monitor/Phone)

External radars run as a separate application — either on a second monitor, a tablet, or a phone. The cheat process on your PC reads game memory, extracts player coordinates, and sends them over your local network to a web-based map display. You glance at your second screen to check positions, just like a real radar operator.

This approach is dramatically harder to detect because:

• The display happens on a completely separate device
• No overlay is rendered on the game screen
• The web display uses standard HTTP/WebSocket protocols indistinguishable from normal network traffic
• Spectators see a clean game feed with no indicators

3. Network/Packet Radar

Some games send all player position data to every client (needed for rendering and prediction). Network radars intercept these packets without reading game memory at all. A packet sniffer captures game traffic, parses the position data, and displays it on a map.

This was historically extremely effective in PUBG, where the game sent all 100 players' positions to every client. Network radars required zero game modification — they just read network packets. Modern games have moved toward server-side fog-of-war to prevent this, only sending position data for nearby players.

4. DMA Radar (Hardware-Based)

The most advanced and undetectable form. A DMA (Direct Memory Access) card — typically a PCIe FPGA board like the LambdaConcept Screamer or Squirrel — is installed in the gaming PC. This card reads the PC's RAM directly over the PCIe bus without any software running on the PC. A second computer connected to the DMA card processes the memory data and displays the radar.

Why DMA radar is considered undetectable:

• No software runs on the gaming PC — anti-cheat has nothing to scan
• PCIe reads are handled by hardware, invisible to the operating system
• The gaming PC's CPU never executes any cheat code
• The radar display is on a completely separate computer
• Even kernel-level anti-cheat cannot detect PCIe bus reads from another device

The downside is cost: DMA cards range from $100-500, plus you need a second PC or laptop for processing and display.

How Radar Hacks Work in Popular Games

Warzone / Call of Duty

Warzone's large 150-player maps make radar extremely valuable. The game uses client-side prediction, meaning your PC receives position updates for all players within a large radius. Radar hacks parse these positions and display them on a top-down map. Key features in Warzone radar:

• Player position with directional arrows showing which way they face
• Loadout drop locations
• Buy station activity
• Vehicle positions (helicopters, trucks, ATVs)
• Circle prediction (some advanced radars calculate future zone positions)

PUBG

PUBG was the game that made radar hacks mainstream. Early PUBG sent all 100 players' positions in unencrypted packets, making packet-based radar trivially easy. PUBG Corp eventually added packet encryption, but memory-based and DMA radars continue to work. PUBG radar typically shows loot locations in addition to players, which is extremely useful in the early game.

Escape from Tarkov

Tarkov's hardcore gameplay makes radar arguably the most impactful cheat in any game. Knowing where every player and AI scav is on the map eliminates the core challenge of the game. Tarkov radar also shows:

• Loot in containers (GPUs, keycards, LEDx, etc.)
• Player inventory (what gear they're carrying)
• Extract points and their status
• Boss spawns and patrol routes

DMA radar is particularly popular in Tarkov because BattlEye's anti-cheat is aggressive, and the financial stakes (losing gear in a raid) make players willing to invest in expensive hardware solutions.

Apex Legends

Apex radars display all 60 players on the map, along with high-tier loot locations. The fast-paced nature of Apex means radar is most useful for rotations — knowing where to position for the next ring based on where all squads are located.

Setting Up an External Radar

Here's what a typical external radar setup looks like:

1. Gaming PC: Runs the game normally. A small client-side process (or DMA card) reads player positions.
2. Local server: A lightweight web server (often Node.js or Python) receives position data and serves a web-based map.
3. Display device: A second monitor, tablet, or phone connects to the web server and displays the live radar map.

The map is typically rendered using HTML5 Canvas or a mapping library like Leaflet.js, with the game map as a background image and player positions as colored markers that update every 100-500ms.

Network Configuration

The web server runs on your local network (e.g., 192.168.1.x:8080). Your display device connects via WiFi. For phone-based radar, you simply open a browser and navigate to your PC's local IP address. No internet connection is needed — everything stays on your LAN.

Radar Hack Advantages and Limitations

Advantages

• Strategic superiority: You know where every player is, enabling perfect rotations, ambushes, and avoidance
• Spectator-proof: External radar leaves zero visual evidence on your game screen
• Low mechanical skill needed: Unlike aimbots, radar helps through positioning rather than shooting. Your gunplay looks 100% natural
• Team benefit: You can call out positions for your entire squad without them needing cheats

Limitations

• Doesn't help in direct gunfights: When you're face-to-face with an enemy, radar doesn't improve your aim or reaction time
• Requires attention splitting: You need to glance at a second screen, which takes your eyes off the game
• Update delay: Most radars update at 5-10Hz (every 100-200ms). Fast-moving players may not be perfectly positioned
• Vertical information is limited: A 2D radar doesn't tell you what floor a player is on in multi-level buildings

Detection and Anti-Cheat

Radar hacks are among the hardest cheats for anti-cheat to detect, especially external and DMA variants:

• Internal radar: Moderate detection risk — anti-cheat can detect the overlay rendering and memory reading
• External software radar: Lower risk — the reading process can be disguised, and the display is on another device
• Network/packet radar: Low risk if passive (just sniffing packets). Some games detect unusual network configurations
• DMA radar: Effectively undetectable by current anti-cheat technology

The main detection vector isn't the radar itself but your behavior. If you consistently make "impossible" decisions — pre-aiming angles where enemies are about to appear, always rotating away from danger, looting the exact room with the best gear — skilled observers may report you for suspicious game sense.