Catch AI play while the game is on
A free detection tool made by . During a game it reads the game’s action records in real time, and when it finds actions no human hand can make it tells you right away in the top-right corner of the game screen. After the game it analyses replays too.
Illustration; player names are made up
Just keep it running. It shows one short line on screen when something is wrong and keeps the details in a report.
During a game it reads the game’s action records every 0.5 seconds. Once it reaches a verdict it shows “X is likely using AI” and the confidence in the top-right corner of the game screen (below the resources) and stops checking that game. APM and other numbers go into the report.
Click “Analyse replays…” or drop .rep files onto the window for a one-line verdict per player. Remastered and 1.16.1 replays, several at a time, without starting the game.
It only reads memory through Windows’ read-only functions: no injection, no memory writes, no game commands, and it never plays for you. It checks the game version at start and does not read unknown versions.
It does not connect to the internet at all, and there is no sign-up or login. Replays, action records and reports stay on your PC.
The app, the in-game notes and the reports follow your Windows display language: Korean, Chinese, or English for everything else.
A single exe: no VC++ runtime or .NET needed, only components that come with Windows.
APM is never the test, because top players have high APM too. We look for two traces that are physically impossible for a person but come naturally to a program.
A game frame lasts about 42 ms. To give orders to two different groups within the same frame, a person has to switch groups and click again, which takes several frames at least. A program can do it all at once.
Right after an order, another group is reselected in the same frame. This is the trace an AI assistant leaves when it acts for the player and then hands the selection back.
The traces above, and almost no control-group hotkeys (fewer than 5 per minute).
The traces above, while control-group hotkeys are in normal use.
If the traces stay at 1–3 per minute until the end of the game, nothing is shown on screen; the report notes “a few suspicious actions”.
All test replays were re-run the way live detection works: a verdict as soon as the conditions are met at any point of the game.
| Test group | Size | Result |
|---|---|---|
| Fully automated AI games | 12 games | 12 / 12 detected · 99% Detected at 1:49–5:23, median about 2:20 |
| Human + AI co-op modeHuman builds, AI controls the army | 6 games | 6 / 6 detected Detected at 1:45–2:26 |
| Human game replays“Bbalmu” stacked-mineral maps | 1,441 player-games | 0 false positives The only flags were AI games mixed into the replay pack |
| Ladder replaysGames of 4 minutes or longer | 28,165 player-games | 41 flagged · 0.15% 36 at 99%: accounts that never use control-group hotkeys and have bot-like names; 5 at 90%, including accounts named like macro tools |
Tested on 2026-09-30. Flags in ladder replays cannot all be verified one by one, so read confidence as the strength of the evidence, not as a verdict.
Only one player in the game needs to run it: it checks every player with recorded actions, including you.
Download the zip on a Windows PC and unzip it to any folder (do not run it from inside the zip).
Run SCAIDetector.exe; there is nothing to install and no sign-up. If Windows says “Windows protected your PC”, click “More info” → “Run anyway”. Start it before or after the game, either works.
The “Live detection” card shows “Game in progress”. An AI verdict comes after about 1:45 of play, once there is enough evidence.
If someone uses AI, a note appears in the top-right corner of the game. After the game, click “Open reports folder” for APM and other details.
Drop .rep files onto the window or click “Analyse replays…” to pick several. Each replay gets a card; click it for the full report. No install for a quick check: analyse a replay on the web →
It is free. The zip contains the app and a short guide in Korean, English and Chinese.
by · Windows x64
Yes. Download it and use it: there is no sign-up, no login and nothing to pay.
No. The detector never connects to the internet. Replays, action records and reports are saved on your PC only and are never sent anywhere.
The detector reads the process memory of the Windows version of StarCraft: Remastered and draws its window with components built into Windows, so it runs on Windows 10 / 11 (64-bit) only. It does not run on Macs, Linux, phones or tablets, and StarCraft for Mac is not supported.
If you are reading this on a phone, copy the link and download the detector on a Windows PC.
The app is not code-signed yet, so Windows SmartScreen may warn you. Click “More info” → “Run anyway”. To make sure you have the right file, compare it with the SHA-256 values in the download section.
Confidence is the strength of the evidence, not a verdict. 99% means humanly impossible actions appeared and control-group hotkeys were almost never used; 90% means it looks like a human with AI assistance. Please check the report (APM, hotkey use, when the suspicious actions happened) and the replay.
A detection is statistical evidence, not proof of cheating. If you report someone, follow the rules and process of that platform or tournament, and please do not use the results to publicly blame or harass anyone.
No. When one player runs it, every player in the game is checked; it does not matter which one is you.
Usually the game is running as administrator. Right-click SCAIDetector.exe → “Run as administrator”.
Live detection supports StarCraft: Remastered 1.23.10.13515 (64-bit) only and refuses other versions so that the data it reads is always correct. Replay analysis is not affected.
First check that the detector window shows “Game in progress”. If a detection happened but the game shows no note, set the game’s display mode to “Fullscreen (Windowed)”. Live detection is off while you watch a replay; use “Analyse replays” for replays.
It does not modify the game: it only reads memory, never injects code, writes game memory or sends commands, and it never plays for you. Before using it on other platforms or in tournaments, please check their rules.
Download, unzip, run, and start your next game.
— StarCraft AI Detector · by Dangge (当哥)