Not a Bug

Your game isn't broken. At random moments something goes wrong on purpose: inverted controls, a tilting camera, lightning next to you, a mob behind your back. 48 pranks, client-side, works on any server. Panic key: DEL.
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Not a Bug 0.2.0 — The Intruder Update

File namenotabug-0.2.0.jar
Uploader
topsyy_yytopsyy_yy
Uploaded
Sep 14, 2026
Downloads
2
Size
121.2 KB
Mod Loaders
Fabric
File ID
8878313
Type
R
Release
Supported game versions
  • 1.21.11

Curse Maven Snippet

Fabric

modImplementation "curse.maven:not-a-bug-1653629:8878313"

Learn more about Curse Maven

What's new

The Intruder Update 🕵️ — 12 new pranks, now 60 total

Someone is in your world.

• Intruder — a 30-second scripted sequence: "Steve joined the game" → footsteps approaching → someone mines a block of your wall (and stops — nothing breaks) → a chest opens and closes → the footsteps leave → "Steve left the game"
• Watcher — a mob in your peripheral vision, facing you. The moment you look at it, it's gone
• Ghost miner — real crack stages on your wall with the real pickaxe sound… then it stops
• Phantom break — a block behind you bursts into particles. You turn around: intact
• Fake TNT — primed, blinking, hissing at your feet… and it fizzles out
• Chicken rain — 12-18 chickens fall from the sky
• Distant explosion — a boom, particles, a camera shake. Nothing exploded
• Deafness — absolute silence for five seconds
• TV static — white noise + "NO SIGNAL"
• Rogue cursor — a mouse cursor wanders across your screen, clicking things
• Cutscene — cinema bars + "Directed by <your name>"
• Toast storm — five absurd toasts in two seconds

No new mixins. Client-side only, nothing touches options.txt, your world or your inventory, and DEL cancels everything instantly.

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