- Patch 1.0.3 - 31 May 2026
Fixes of today:NEW VHS filter in liminal modeFixed other backgrounds still not working in liminal and multiplayer (now it should work just fine)Fixed hide and seek mode not working correctlyFixed ending counter and endings and achievement not working correctlyFixed spawns in level walk and runMade UI more intuitive
- Patch 1.0.2 - 30 May 2026
The feedback is helping us improve the game, here is what we have done : Added more hints to help players complete the levelsAdded description of normal and liminal mode Added ending counterFixed some backgrounds that were missingFixed falling animationThanks for the amazing support since release , hope that everyone can enjoy Lost in the backrooms: Day 100. SPECIAL THANKS TO :H2ODeliriousVanossGaming DaithiDeNogla BasicallyIDoWrk PastaroniRavioliGaming KingLuiCalibre (loved the video)
- Hotfix 9# (Caseoh's Feedback) - 29 May 2026
Improved things using Caseoh's feedback in his gameplay:Added sensitivity sliderAdded arrows and stains to help players escape level 0Made level 1 brighterThanks for the support and the feedback in these days.Special thanks for Caseoh, i really hope you'll play it again.
- Game release - 26 May 2026
This will be the last update of the game so to make the game more enjoyable we made it easier to find the vent in level 1 (because many people couldn't advance because of it)We also added Parallax occlusion mapping in some materials like the rocks of level 11.We've decided to stop working on Lost in the Backrooms Day 100.It’s not something we wanted to do, but honestly we just don’t feel like continuing this project anymore. We’ve spent a lot of time on it and tried to improve it as much as we could, but at this point it makes more sense for us to move on.We want to say thank you to everybody that played it or gave feedback. It meant more than you think and helped me a lot while developing it.Maybe we’ll come back with another game, I don’t know yet. For now though, this is it for this project.Take care, and thanks again.
- UPDATE 5.0 - 29 March 2026
Early access 5.0After a lot of time not talking about the game we FINALLY finished this update and there is a lot to say.IMPROVEMENTS AND NEW ADDITIONS:Improved main menu Reworked options menu(DLSS, FSR , NEW audio settings...)NEW VHS mode and motion blur toggleImproved proximity voice chat Character selection(2 new playermodels)NEW introNEW level selection with the HubNEW animationsa LOT of general and game breaking bug fixes NEW level and NEW endingLevel fun , 11 retextureNEW skinstealerHide and seek rebalancing and new level Level 0 NEW lighting Improved movemenet , spine rotationAdded whistelingHomer ritual in Hide and seek mode press 7 to domer forgot other fixes NEW demo
- Hotfix #8 - 13 January 2026
Hi everyone, we're back with some good news. The game's release is approaching, and finally, after this break, we're proud to announce that multiplayer should be working properly for everyone (if it doesn't, please contact us). We've also considered adding multiplayer to an updated demo, as the previous one is too outdated.Changes:Removed all the christmas decorationsFixed return to menu button not working in multiplayerFixed some clients who couldn't move in multiplayerFixed spectator widgets resettingSmoother transitions between main menu and levelsRight now the multiplayer can still have problems so feel free to contact us
- CHRISTMAS UPDATE! - 18 December 2025
Little Christmas Update before the next updateWe wanted to relase this little patch for the Winterfest :)New things in this update:UI revamp and smoother fade in and out (soon everything will have smoother fade in and out)Christmas Hat for the hamzat , Christmas main menu and christmas multiplayer lobby :DAlso IMPORTANT UPDATE VERY VERY VERY SOON (and some things to say)
- Hotfix #7 - 11 December 2025
We fixed urgent bugs like:Missing textures in level 2 and level 1.Then we also improved the Level fun, now it's bigger, a little bit longer and more interesting.
- Hotfix 6# - 4 December 2025
Today we have new improvements to the game !Poolrooms revamped Sanity drain rate decreased by 30%Made level 37.1 brighterMade Hydrolitis plague in level 37.1 more recognisableMade flashlight brighter, we added a better texture and the flashlight it's better overallAdded new crouch systemAnd bug fixes of course:Fixed portal sound in level The end starting at 22 vhs tapes instead of 23Limited Global illumination to very high because of artifacts and visual bugs when set to ultraFixed anti-aliasing method resettingThe poolrooms revamp also includes lighting fixes, smoother map and better graphics.Other fixes that i don't remember right nowWhat are we doing for the next medium sized update:We are going to add 3 new levels in normal mode, liminal mode and multiplayer, the levels are:Level 3 "Electrical station" Good state of development and it's near to be finishedLevel 4 "The office" Start…
- Hotfix 5# - 27 November 2025
Some fixes for the multiplayerFixed almond water replicating incorrectelyFixed level 37.1 skipFixed floating animation randomly playingOther minor fixesAlso we are still working for the new levels for the next update...
- NEW GAMEMODE Update 4.1 - 24 November 2025
Today we are finally releasing the update 4.1 of Lost in the backrooms day 100 that brings to the game:A new gamemode called Hide and SeekIn this gamemode one of your group of friends will be selected as a monster The monster will have to kill evereyone in the time limit while the surivors will have to survive for 7 minutes for now the only map is level 0 but we will add more of themWe also had to fix a lot of stuff:Optimized performanceVoice chat improvements (Finally working)Made the medium settings the default ones (you can change it) Fixed texture blurred in level 188Fixed stamina issues from client and added a cool stamina bar in the bottom leftFixed door in level run multiplayer not workingAdded Sound attenuation Fixed generator in level 188 multiplayer(if two players approched the generator at the same time , one of the players would be stuck)Made UI cleanerMinor bug fixes that w…
- Hotfix 4# - 16 November 2025
Fixed that the lights in level 0 start flickering and go off, this wasn't wanted, or at least not yet
- Hotfix 3# - 4 November 2025
Changed run animation Made level 1 Brighter Added arrows indicating locked doors Added sound effects for the noclip in the intro Made the intro moquette glitched
- Hotfix 2# - 1 November 2025
Added camerashakes Fixed bacteria not screaming Fixed partygoer slightly flying
- Hotfix 1# - 1 November 2025
Fixed clouds in level 11 multiplayerRemoved a bugged door in level 11 liminalAdded footsteps sound attenuationFixed textures missing in level 188Fixed save files problems We are working for update 4.1 so stay tuned for some sneak peaks
- Patch #2 Demo - 19 October 2025
Fixed doors in level 1 that prevent you to finish the levelPlaced puddles in level 1 liminal mode
- Patch #1 Demo - 18 October 2025
Fixed almond water not being drinkable
- Patch Pre-Release 1# - 5 October 2025
Fixed Voice chat problemsImproved optimization for better performanceUpdate 4.1 development startedTrying to fix fatal errors while switching levels in multiplayer
