Sigma was a (commonly called a “hacked client”) for Java Edition. Unlike many clients that focused solely on anarchy servers (e.g., 2b2t), Sigma aimed to be an all-in-one solution for:
Sigma’s true innovation was its . Using Sigma’s built-in JavaScript API , users could write and share “scripts” that tweaked packet order, timing, and spoofing to bypass Watchdog (Hypixel), AAC, and NCP.
Primarily supported versions such as 1.8.9 and 1.16.5 , though some "NextGen" or Fabric-based fan projects claim to support up to 1.21 .