Create Your AI Furry
Design every detail, choose every scene, watch every fantasy unfold.
Play Free Now
You design every detailUncensored, no filtersAny scene you choose
AI Furry CompanionAI Furry Companion
Build Your AI Furry
Design every detail, choose every scene, watch every fantasy unfold.
Build Yours FreeBuild Yours Free
You design every detailUncensored, no filtersAny scene you choose

Unity In Heat: Lustful Nights

In Heat: Lustful Nights
Version: v0.4.1.3 Developer: MonsterBox · Itch.io · Subscribestar · YouTube · Steam Updated: 2026-02-20
Download
Old Builds
AI Furry Companion
LIVE EVERY FURRY FANTASY
Try AI Furry for FreeTry AI Furry for Free
Any species, any kinkUncensored AI roleplayRemembers every session

About this game

In Heat: Lustful Nights gives you a job that's just too good to be true. Every night you'll need to protect yourself from a dozen something-redacted.

The MonsterBox 2D 3DCG adventure runs anal, big ass, big tits, fantasy, furry, futa, horror, monster and monster girl content through animated survival nights. Maybe if you survive...

A mean, focused furry NSFW game for fans of FNAF-tier night survival.

Changelog

v0.4.1.3
Adjustments Arcade Security Door is not attackable anymore whilst Cheshire Sammy is peeking in Fixes Arcade Fixed Nile SO Audio + Energy Drain not resetting if despawned whilst banging on a door Fixed Player being able to close Door into Nile SO (within 0.7s of her peeking in) Fixed Sammy NC breaking if Maddie SO triggers her whilst she's in the Office Fixed Sammy NC restarting other Characters AI if the Player gets attacked whilst she's in the Office Caused Characters to be able to attack the Player afterthey already lost the Level Caused further issues with the Player being unable to die to the Character that first killed them Fixed Sammy SO not properly unblocking door when leaving after being let into the Office Fixed Maddie SO not unblocking door if despawned whilst peeking into the Office Fixed Cheshire Sammy being stuck in her Office Animation if reloading in the Boss Level Fixed Cheshire Sammy getting stuck at the door after being decapitated Happened if a Minigame started before she properly despawned Gallery Fixed Camera Controls remaining active whilst Menu is open Title Fixed Dating Buttons for Characters (currently) without any dates being interactable
v0.4.1.2
Features Settings Added Anti-Aliasing Option to the Graphics Settings FXAA + SMAA are supported Store Added Chance that a NewItem is dropped in the Store Previously the dropped Items were completely random within the chosen Rarity Bucket Adjustments Arcade Kass NC will not be respawned by the "Apocalypse" Saya Ability anymore Sammy NC Lust will now reset if hit with the "Apocalypse" or "Bomb" Saya Abilities Fixes Arcade Fixed Cheshire Sammy Smile getting closer to the Camera every time the Player starts watching her Fixed Camera sometimes getting stuck on Cheshire Sammy after her Jump Attack Fixed Poppi SO sometimes not appearing during the Tutorial Nightclub Fixed Characters sometimes not appearing in the Score Screen General Fixed Characters sometimes failing to pause correctly For example caused Sammy 64 to continue pathing whilst a Minigame was playing
v0.4.1.1
Arcade Fixed Ari BM appearing completely black Fixed Crane Game Drop Shadow not being displayed FIxed Crane Game BGM not looping Fixed Sammy 64 BGM distorting at higher difficulties Fixed Sammy 64 Jump Scare happening at the end of her Path instead of in the Office Fixed Maddie SO (and other Characters) circumventing the Kraken Door Block Localization Fixed Character Descriptions not being updated in Korean & Russian Minor other Localization Fixes for Japanese, Korean, and Russian
v0.4.1.0
Arcade Added Corridor between Idol Stage & Storage Room Added Corridor between Gaming Room & Piss Cave Added Nile SO + Sammy Goon Door Banging SFX Added Ari NC Gasp Subtitles Notification about her entering a Room with a Moon Ornament Added Ari BM Saya Ability Stuns her for a bit Added Assist Mode Icons to the CCTV Map Shows Vents, Fuse Boxes, Claw Machine, active Moon Ornaments, active Kass Machines Added Saya Ability Information to the Level Information Screen for Campaign Levels Arcade - Calamities Decreased Queen of Hearts Health from 2 → 1 Decreased Jubjub Health from 2 → 1 Increased number of spawned Kraken Tentacles Number of Tentacles that need to be destroyed remains the same (3) Arcade - Saya Abilities Removed obsolete Abilities & redistributed others across the Map Alert now also stuns the entering Character Alert Corruption Cost increased from 5% → 10% Attract Time increased from 20s → 40s Goon Despawn Corruption Cost decreased from 50% → 20% Goon Despawn Psych Cost decreased from 90% → 70% Level Down Usage Limit decreased from 4 → 2 Level Down Corruption Cost decreased from 20% → 15% Lockdown Time increased from 30s → 40s Lockdown Corruption Cost decreased from 30% → 20% Phone Therapy Corruption Cost decreased from 25% → 20% Teleport now moves Characters in the current Location to a random Spot on the Map Teleport Usage Limit decreased from 2 → 1 Teleport Psych Cost increased from 30% → 40% Stun Time increased from 20s → 30s Stun Usage Limit decreased from 4 → 2 Vent Restore Corruption Cost decreased from 10% → 0% Vent Defend Corruption Cost decreased from 10% → 5% Corruption Chance Ability added Chance to decrease Corruption. Failure does nothing. Nightclub Added Assist Mode Score Display Displays current Customer, Score, and Total Rank Adjustments General Decreased CCTV Static Transition Time from 200ms → 100ms Arcade Added Kass Machine Destroy Particles Added Queen of Hearts Destroy Particles Added Sammy NC Office SFX Added Sammy NC Peek Animations Added Nile A Saya Ability Visuals Added Token Rewards Added Phone Therapy + additional Cheshire Sammy Subtitles Added NSFW Sammy Goon CG Fixed Sammy Goon Portraits Updated Moon Ornament Visuals Settings Disabled MSAA Setting due to a current bug with our Outlining Solution Arcade Fixed Cheshire TV not ramping up during Boss Night Fixed Cheshire Sammy not advancing her Jump Attack Timer whilst despawned Only relevant for Custom Night Fixed Cheshire Sammy & Nile SO peeking into the Office too early Were clipping into the opening door Fixed Vent Defend SFX Slap played way too late Fixed Bar Pickup Point being positioned directly behind a Saya Ability Fixed Poppi Bomb Microgame sometimes counting a loss even though the Parry Sound was played Fixed Paparazzi Panic allowing multiple Good Shots of the same pose Fixed Paparazzi Panic GAME OVER Screen staying open indefinitely Game can still be played but the Player can't see anything Fixed Sammy 64 sometimes spawning multiple times on higher difficulties Fixed Sammy 64 Texture Quality Nightclub Fixed Maddie Stockings disappearing if she's visible behind the closed Office Doors Fixed certain Videos being skipped breaking the Nightclub Boss Security Office Fixed Characters staying visible after the Death Taunt Fade
v0.4.0.8.1
Fixed Security Office Tutorial being broken
v0.4.8.0
Adjustments General Adjusted how Audio is loaded Should decrease RAM Usage Balancing Arcade Adjusted Heisencoin / Heisendoubloon Material for better visibility Adjusted Sammy SO Corruption Effect for better visibility Fixes General Various Fixes for increased stability None of these had any direct impact on Gameplay so they're not mentioned in more detail Arcade Fixed Misty NC Minigame Vent Audio not pausing when the game is paused Fixed Camera possibly getting stuck on Misty NC if Minigame finished frame perfect Fixed a Tutorial Kass Line missing the phone filter Fixed Orb + Pie being visible under Maddie NC in her Idle Animation Nightclub Fixed Ari & Kass not being available in the Demo, leading to Issues in the Score Screen Gallery Fixed BGM sometimes not re-enabling itself after returning from a Sex Scene Localization Fixed Issues with Character Descriptions (Arcade) in Russian Fixed Issues with Nightclub Boss Cutscene Subtitles in Russian
Installation
1. Extract and run.
Developer Notes
**This game is in development, expect updates and more content!

Buy now to get access to all future content updates!

Want to help support the game and get some neat rewards? Check out our Substar!**
Old Builds

Similar games