What Is ESP in Games? Wallhacks, ESP Hacks & How They Work

In gaming, ESP (Extra-Sensory Perception) is a cheat that shows a player information they should not be able to see — enemy positions through walls, health, names, and loot. Its most famous form is the wallhack.

In gaming, ESP stands for Extra-Sensory Perception, and it refers to a category of cheat that shows a player information they should not be able to see — enemy positions through walls, health bars, names, distances, and loot locations. The name borrows from the paranormal idea of “sensing” things beyond normal perception, because that is exactly what it gives a cheater: awareness the game was never meant to hand them. The single most famous form of ESP is the wallhack, which lets a player see enemies straight through solid walls.

To be clear up front, because the term is overloaded: this guide is about ESP as a cheat in online games. It has nothing to do with a car's stability control (also “ESP”), ESP in psychology, the ESP32 microchip, or magic tricks. We research and test game-security tooling hands-on, so below we break down what ESP actually shows, the two different ways it is built, why it is one of the hardest cheats to detect, and where the ban line sits.

What Is ESP in Games?

ESP is third-party software that reads hidden game data and draws it onto your screen, so the player “knows” things the game intended to keep secret. Unlike an aimbot, ESP does not aim or shoot for you — it does not touch your controls at all. It simply feeds you information, turning guesswork into certainty: where every enemy is, how much health they have, which way they are facing, and where the good loot dropped.

That information-only nature is the whole identity of ESP. It is closer to a permanent, cheating radar than to a bot. And because the player still has to aim and shoot themselves, ESP is the cheat of choice for people who want a hidden edge while looking like a “legit” skilled player.

ESP vs. Wallhack vs. Aimbot

These three terms get mixed up constantly, so here is the clean hierarchy:

• ESP is the umbrella category — any cheat that reveals hidden information.
• A wallhack is a type of ESP — specifically, the part that lets you see players and objects through walls. The rule of thumb: all wallhacks are ESP, but not all ESP is a wallhack. Loot ESP or a 2D radar are ESP without being a “wallhack” in the see-through sense.
• An aimbot is a different mechanism entirely — it controls your aim. ESP shows; the aimbot acts.

Cheaters very often run both together — ESP to find the target, aimbot to hit it — but they are separate features. For the aiming side, see our companion guide on what an aimbot is.

What ESP Shows: the Common Types

“ESP” is a bundle of overlays. The ones you will run into most:

• Box ESP — a 2D or 3D box drawn around each enemy so they are visible through walls and at a glance.
• Skeleton ESP — lines tracing the enemy's bone structure, showing exact posture (useful for hitting a target peeking from cover).
• Chams — recolored, flat-shaded character models that glow through walls and geometry (a “true” see-through effect rather than an overlay box).
• Snaplines / tracers — lines drawn from your screen to each enemy, making distance and direction instantly readable.
• Player info — floating tags with name, health, distance, and the weapon being held.
• Loot / item ESP — highlights of rare weapons, armor, or objectives on the map (huge in extraction and battle-royale games).
• 2D radar — a minimap overlay plotting every player's position, like having the whole lobby on your screen.

Loot and player ESP are especially punishing in extraction shooters and survival games like Escape from Tarkov, DayZ, Rust, and PUBG, where knowing every position and item drop decides the match.

How Does ESP Work?

There are two technically different ways to build ESP, and they fail to different anti-cheat methods. Many cheats combine them.

Method 1: Memory reading + world-to-screen overlay

This is the classic ESP. The game keeps every player and object in memory as an entity list, each entry storing world coordinates (X, Y, Z) and state such as health and team. The cheat reads that list, then runs a world-to-screen transformation — using the game's own view and projection matrices to convert a 3D world position into the exact 2D pixel where it appears on your monitor. Finally it draws a box, name, or line at that pixel. The drawing is either an external overlay (a separate transparent window painted on top of the game) or an internal overlay (code injected into the game that hooks its renderer). Either way, the game world is untouched — ESP just paints extra information over it.

Method 2: Render hooking (the “true” wallhack)

The second method doesn't overlay anything — it changes how the game draws. Games decide what is visible using a depth buffer, which compares the distance of each object to the camera so nearer surfaces correctly hide the ones behind them. A render-hook wallhack intercepts the graphics API (DirectX or OpenGL) and forces the depth test to always pass — in OpenGL terms, switching glDepthFunc to GL_ALWAYS — so models behind walls render anyway. To avoid revealing the entire map, it uses heuristics (for example, the number of primitives in a draw call) to tell complex objects like characters from simple terrain, and only x-rays the players. Chams are the same idea with a recolored material.

The short version: Method 1 draws information on top of the game; Method 2 tricks the game into drawing enemies through walls.

Internal vs. External vs. DMA ESP

How the cheat is hosted decides how detectable it is:

• External ESP — a separate program reads game memory and paints an overlay window. It never modifies the game files, which makes it harder for some checks to see, but it can only do overlay-style ESP, not render hooks.
• Internal ESP — injected into the game process so it can hook the renderer (required for chams and depth-buffer wallhacks). More powerful, but injection is exactly what kernel-level anti-cheat hunts for.
• DMA ESP — a second PC with a hardware card reads the gaming PC's memory directly over PCIe and renders the ESP on a separate screen. From the gaming machine's point of view nothing unusual is running, which is why this is the hardest form to catch with software alone. We cover the hardware in detail in what a DMA cheat is.

Why ESP Is So Hard to Detect — and How Anti-Cheat Fights It

ESP has a strange reputation: it is simultaneously one of the hardest cheats to detect technically and one of the easiest to spot by eye. Both are true, and the contradiction explains a lot.

It is hard to detect because, at the memory level, ESP is read-only. It doesn't change your aim, send fake inputs, or alter packets — it just reads data the game already put in your PC and draws pictures. There is no anomalous action for the server to flag. That is the core point made in long-running developer discussions about why ESP can't simply be “patched out.”

So anti-cheat attacks it from three angles:

1. Memory and injection scanning. Kernel anti-cheat looks for the injected code, hooks, and overlay processes that ESP needs to run — the most direct defense against internal ESP.
2. Server-side data minimization (the real fix). The strongest approach is to never send the client data it shouldn't have. Riot's “Fog of War” in Valorant and PUBG's Anti-ESP both do versions of this — PUBG describes it as eliminating the location details of players who are out of sight, so a cheat has nothing to reveal. It works, but it is expensive to compute and tricky in fast games where the client needs information early to render smoothly.
3. Behavioral and demo review. This is where “easy to spot” comes in: a player who constantly pre-aims walls, tracks enemies through smoke, or rotates perfectly toward hidden opponents lights up in replays and reports, even when the software is invisible.

The honest takeaway: ESP is hard to prove from software alone, which is why the best defenses move the data itself out of reach — and why blatant ESP users still get caught by their own suspicious behavior.

How to Tell If Someone Is Using ESP

You usually can't confirm it in the moment, but these behaviors are strong signals, especially several together:

• Pre-aiming walls — aiming at exactly where you are before they could possibly see you.
• Tracking through smoke or cover — following your position when you should be hidden.
• Perfect rotations — always turning toward the next threat with no “searching.”
• Beelining to loot or objectives — running straight to rare items they had no normal way to know about.
• No wasted checks — never clearing empty rooms, never surprised, always set up before a fight.

The fair caveat: experienced players read maps, sound, and timers extremely well and can look similar. Studios rely on server data and demos rather than eye-tests, so if you're convinced, use the in-game report tool.

Is ESP a Cheat, and Is It Bannable or Illegal?

Is ESP a cheat? Yes, unambiguously. It gives information the game deliberately hides, which is a clear unfair advantage.

Is it bannable? Almost always. ESP violates the terms of service of essentially every online game, and detection leads to an account ban and often a hardware (HWID) ban. In organized play, professionals caught wallhacking have been disqualified and banned from competition — it is treated as one of the most serious integrity violations in esports.

Is it illegal? For the player, usually not — it is a rules and contract violation, not a crime in most jurisdictions. As with other cheats, the real legal exposure falls on the people who develop and sell them, which has led to lawsuits and, in some countries, criminal penalties for selling cheat software.

Can ESP Be Turned Off?

In the cheating sense, ESP is not a setting inside the game — there is no menu toggle for it, because it is third-party software running outside the rules. The only ways it “goes away” are the player uninstalling it or the anti-cheat detecting and banning the account. (If you searched this expecting a car's ESP/stability-control button, that is a completely different system and unrelated to gaming.)

Frequently Asked Questions

What does ESP mean in gaming?

ESP stands for Extra-Sensory Perception. It is a category of cheat that displays hidden information — enemy locations through walls, health, names, distance, and loot — that a player should not normally be able to see.

Is ESP a cheat?

Yes. ESP reveals information the game intentionally hides, which is an unfair advantage and a violation of the terms of service in virtually every online game.

What is the difference between ESP and a wallhack?

A wallhack is a specific type of ESP that lets you see players through walls. ESP is the broader category, which also includes loot ESP, radar, and player-info overlays. All wallhacks are ESP, but not all ESP is a wallhack.

Is ESP the same as an aimbot?

No. ESP only shows you information; you still aim and shoot yourself. An aimbot takes over aiming. Cheaters often use both together, but they are different mechanisms.

Are ESP hacks detectable?

They are hard to detect at the memory level because ESP is read-only, but anti-cheat catches them through injection scanning, server-side data minimization like fog-of-war systems, and by spotting suspicious behavior such as pre-aiming walls.

Is ESP bannable?

Yes. Using ESP typically results in an account ban and often a hardware ban, and in competitive play it leads to disqualification.

Can ESP be turned off?

There is no in-game toggle for cheat ESP because it is external software. It only stops if the user removes it or the account is banned for using it.