Before You Start

Read this checklist before you do anything else. Skipping any of these will break the setup later.

Windows 10 or Windows 11 on a 64-bit PC. Mac, Linux, and mobile are not supported.
Python 3.12 installed from python.org. During install, check the box that says "Add Python to PATH". This is required — the app will not start without it.
Administrator access to the PC. You will click "Yes" on a Windows permission prompt once during install.
Chrome installed. The exam opens in Chrome.
Your email and a password you'll remember. You'll use this to log into crystal meth and the website.

If you don't have Python 3.12: download it now, run the installer, tick "Add Python to PATH", and verify by opening PowerShell and typing python --version. It should print Python 3.12.x. If it says "not recognized", Python isn't installed correctly — try again.

ⓘ Supported Exam Servers

Crystal Meth works with exams hosted on training2.saveetha.in that says 'SEB CONFIG'. Other exams are not supported yet.

Get Started

Follow these steps in order. It takes about 5–10 minutes total (Python install is the longest part). If anything looks wrong, ask chatGPT or something for help. If it's still not cleared up, ping me with the help of Contact Info. Available in the contact info page at the bottom.

Create an account

Go to the Sign Up page and enter:

Email — this becomes your username/login.
Password — at least 6 characters. Don't forget it.
Display name — the name that appears on the exam site.
Register number — your college register number.

Your display name and register number will appear on the top right of the exam site and cannot be changed later. Type them carefully.

Wait a few seconds

Your account is set up automatically. About 20 seconds after you submit the signup form, your account is ready to use.

Every new account gets 15 minutes of free trial in Standard credits — enough to try the tool before spending anything.

Go to the Donate page and log in with the email and password you chose. You'll see a "Your Account" box showing your current balance in both credit pools.

Two credit types:

Standard credit — used on normal exam pages. Cheaper (₹50 for 1 hour). Always spent first.
Premium credit — required for OTP-protected quiz pages. More expensive (₹150 for 45 minutes). Also used as a fallback when standard credit runs out.

Don't know if your exam uses OTP pages? Buy at least one Premium credit before the exam. Premium automatically works everywhere Standard does, so nothing is wasted.

When you're ready, the Donate page walks you through buying a gift card and submitting it.

Download and install the app

Click the download button below. This opens a Proton Drive page.

On that page, click the Download button. Your browser will save CrystalMeth-Setup.exe to your Downloads folder.

⬇ Download CrystalMeth-Setup.exe

Double-click the downloaded file. A Windows installer will open. Click Next → Next → Install → Finish.

Windows will warn you: "Windows protected your PC" or "This app isn't verified". This is because the app isn't code-signed (signing costs money we don't have).

Click "More info" → "Run anyway".

The installer will ask for admin permission once. This is needed to register the .seb file association and add a Windows Defender exclusion. Click Yes on the UAC prompt.

Get your exam file (.seb)

Before the exam, if not already downloaded, download the .seb file from training2.saveetha.in. It will be on the left under 'SEB Configuration'.

Save it somewhere you'll find it easily.

Double-click the .seb file

That's it. The exam opens in Chrome and the login page loads.

On first launch, you may be asked to:

After that, future launches skip straight to the login page.

Take the exam

The exam runs in chrome but looks just like the real Safe Exam Browser. Don't exit SEB until you're done. Exiting will stop your session and freeze the time you have left.

To exit: click the power button on the bottom taskbar, confirm, and wait for the splash screen. Everything closes and exits cleanly.

What happens when credits run out

When your standard credit reaches 0, if you have premium credits, normal exam pages will start using your premium credit as a fallback. This is automatic — you don't need to do anything.

When your premium credit reaches 0 and you try to open an OTP-protected page, the page will refuse to load. Go back to a normal page, or top up premium credits.

When both pools hit 0, your session ends. Chrome closes, and you'll need to top up before starting the exam again.

Before a long exam, check your balance. Open the Donate page, log in, and look at the "Your Account" box. If your total minutes is less than the exam duration, top up first.

Having trouble?

"Windows protected your PC" when running the installer

Click More info → Run anyway.

"Cursor spins but nothing happens" when double-clicking the .seb file

Wait 10–15 seconds. The first launch is slower because Windows extracts the app bundle. Subsequent launches are fast.

"No internet connection" inside the exam

This usually means the patch didn't start. Close everything, restart the .seb file. If it persists, restart your laptop.

"Giftcard approval status- pending"

This usually means your giftcard hasn't been approved yet. It takes 5-30 mins for manually verifying the gift card and approving it. If it's been more than an hour, message Heisenberg.

Anything else

Go to the Contact Info page. Communicate your problem directly to Heisenberg. Incase of a bug or glitch, include a screenshot and a brief paragraph about what you were doing when it broke.