A 34-outcome daily roll of small, mostly harmless glitches.
Once a day, the AmbientEventManager rolls one random outcome per player from a pool of 34 possibilities. Most are small, harmless glitches meant to sell the idea that the world is quietly breaking down around the player.
The pool includes: floating water, bedrock sitting on the surface, a door opening on its own, generic glitch effects, null title-message spam, blindness, distant footstep sounds, a storm, a temporary render distance drop, a sign or title reading something ominous, dirt silently turning to stone, a chunk vanishing, a hole appearing in the ground, an empty chest, corrupted bedrock, nonsense code printed in chat, the player's own name appearing in chat, coordinates briefly disappearing from the F3 screen, the HUD flickering, a Null Scare, music discs playing on their own, a lorebuild structure, torches going dark, a fake BSOD, a nothing_is_dead chat line, and nearby animals staring at the player.
One of those 34 outcomes is the lorebuild event described on the Structures page.