Giantess Spa – Investigation [v0.3.7] By Lucifer and Lilith Synd

Lucifer and Lilith Synd Games released a new game called Giantess Spa – Investigation and the version is 0.3.7. The game’s story is about You Lucas, a detective of the local police department investigating the mysterious disappearances of several male individuals, happening in the City where you always lived. Not many clues are found, whoever is doing this has been hiding their traces really well… But, being one of the best Detectives in your district, you have still managed to at least get a direction in which to investigate… Several clues seem to point to a specific building of a new business in town, a place called Giantess Spa… Little do you know that the Women waiting for you are cruel and ruthless Dominatrixes, planning to create a Femdom Society, and consider men as pleasure tools and slaves… Will you be able to survive the Spa and bring the truth into the light? Venture in this prologue story of Giantess Spa!​

Developer: Lucifer and Lilith Synd
File Size: 1.01 GB
Version: 0.3.7
OS: Windows
Languages: English
game details

Game Version Changelog:


  • 30 new pictures Domination with Yoko and Liz
  • Relationship system now added on full scale
  • One new scene with Sadira as a “reward” for reaching Relationship 3 with Claire, containing 28 pictures.
  • Fixed a few bugs with Claire’s interactions and Sylvia / Morgana’s smothering sequence
  • Fixed a bug where the relationship terminal wouldn’t display correctly
  • Fixed a few sound issues of music not playing properly after some interactions


  • New Yoko and Liz torture, 22 pics
  • New relationship system with Yoko and Liz
  • Added 7 new sounds to the library (choking and inhaling for Lucas)
  • Fixed numerous bugs around the game that wouldn’t let audio play properly
  • Added new option (when interacting with Yoko and Liz for the first time) to lock out all Scat / Extreme content from that point onward (will also lock all interactions with Yoko and Liz). Previously made urine scenes with Trish will still remain


  • 32 new pictures added
  • 2 new dominations (one with Claire, one with Helja)
  • Added score system to Helja
  • 2 new character models created and added in the sprite library
  • Corrected a few bugs and typos here and there

Developer Notes:

Warning: Giantess, Extreme Femdom, Facesitting, Smothering, Farting, Toilet Slavery

Game Images & Screenshots


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