The Backrooms Update — 1.2.0

A quick update focused on a new sanity system, working nether-style portals, smarter entities, and a lot of atmosphere and bug fixes.

Added

• Insanity / sanity system — the longer you stay, the more your mind frays, shown as a row of bubbles that pop one by one:
  • 5 left → creeping black-vein screen overlay fades in
  • 4 left → pounding heartbeat (faster as it worsens)
  • 3 left → blindness
  • 2 left → nausea
  • 0 left → The Complex teleports you around (never into walls/suffocation)
• Two recoveries: step out to the overworld briefly to fully clear it, or shelter in a room/POI.
• ~90-second grace before insanity starts after entering.
• Potion of Insanity  & Potion of Sanity — regular/splash/lingering, found in room loot.
• Spawn eggs for the Still Life and the Lifeform.
• Nether-style warp animation for threshold portals.

Changed

• Portals work like nether portals — overworld portal builds a matching one at the exact same spot in The Complex, paired so you return to the one you left from.
• Portals are breakable (gateway or frame, including inside The Complex).
• Still Lifes spawn a bit more and (in MP) can wear any visitor's real skin.
• Food less rare — more stocked chests, plus bread/cooked food.
• Poolroom ambience — soft underwater bed + varied dripping; grass is now silent; backrooms keep the hum + distant bangs.

Fixed

• Portals are reliable now
• Return portal no longer corrupted by overworld-build mirroring.
• Lifeform keeps hunting after you die and no longer gets stuck.
• Thin spots & mirrored builds now appear in already-explored areas, not just new chunks.
• Crash/freeze hardening around dimension crossings and chunk loading.

Notes

• Start a new world for the best experience. Requires NeoForge for MC 1.21.1 (Java 21).