Download the client

Windows 10 or 11, 64-bit. It keeps itself up to date — download it once.

Download for Windows

v0.22.0 · 120 MB · updated Oct 14, 2026

  1. 1Download. Grab the client archive below.
  2. 2Extract. Right-click the zip ▸ Extract All… and pick a folder you'll keep, such as Documents or your Games folder. Don't run it from inside the zip.
  3. 3Play. Open the MasterOfMobs folder and run otclient.exe. It updates itself every time it starts.
  4. 4Log in. Use the name or email and the password from your account.

“Windows protected your PC”?

Windows shows this for games that aren't signed with a paid certificate yet. Click More info, then Run anyway. You'll only see it the first time.

Verify the download (SHA-256)8a2067f6d9dcbafc08c5b60982ab096a5c2049837c26586e02d5f742755ac072