In Heat: Lustful Nights
Game Information
Developer
MonsterBoxVersion
v0.5
Engine
Unity
Release Date
Jan 29, 2026
Last Update
Feb 2, 2026
Censorship
Uncensored
Overview
In Heat: Lustful Nights is a 3D adult horror adventure for players who like monster girl encounters with a tense, survival-driven mood. It leans dark and predatory rather than lighthearted.
Story
A job offer that looked too good to be true turns out to be exactly that. Behind the promise of comfort and easy living waits a nightly threat: a horde of creatures the player must fend off, with the hope of a better outcome only for those who make it through.
Gameplay
Each night plays out as a survival encounter, where the player must fend off waves of monstrous pursuers to see the next day. Outside of these nightly threats, the game includes side activities like dating interactions and an arcade area with its own cast and environment, giving the loop room to breathe between danger.
Features
- Monster girl and furry designs across a horror-tinged fantasy setting
- Arcade mode with its own characters, outfits, and environment
- Animated 3DCG scenes covering group and one-on-one encounters
Installation
1. Extract and run.
Changelog
v0.5
Features:
- Arcade
- Added Night 7
- Gallery
- Added various Arcade Characters
- Sammy 64
- Cheshire Sammy
- Mad Hatter Poppi
- Heisenbones
- Added Arcade Environment
- Added Arcade Outfits to existing Characters
- Dating
- Added Ctrl-Skip functionality
Adjustments:
- General
- Updated Post-Processing across all Levels
- Updated Japanese Button Hint + Dialogue Font
- Updated Audio Handling for better performance
- Arcade
- Sammy 64 BGM is now played through the SFX Channel
- Fixes Arcade
- Fixed Mad Hatter Poppi Idle not looping correctly
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 after they 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
