Fallen Doll: Operation Lovecraft [Sex Demonstration Demo]

Fallen Doll: Operation Lovecraft is a Cthulhu mythos-inspired erotic rogue-lite tactical game that supports both Desktop play and VR. Currently in development, made by Project Helius, the game is approaching its Steam release, scheduled for mid-2022. Fallen Doll’s closed beta for a selective few Patreon supporters is now live.

There is very little we know about Operation Lovecraft’s actual gameplay. All that we know as of now is the adult portion of the game where players can fool around with three beautiful and sexy women who get to be guinea pigs for strange alien-like creatures held in a mysterious laboratory…


Fallen Doll Sex Simulator

Enjoy a simple but stunning 3D Sex Simulator featuring sex between humans and various creatures in a laboratory setting. Choose your preferred girl out of three options; Alet, Erika, and Dr. Anya. Each girl is customizable with a few given options like clothing, hair and skin color, and skin texture.

Once satisfied with the appearance of your chosen girl, you are given the freedom to select different sexual encounters, either human or monster. Each sexual encounter has multiple options of different sex poses to choose from, much of them still in development.

Utilizing a free camera mode, you are able to create your own preferred angles to view the sex from, but there are also fixed camera angles to quickly find the best view if so desired. You can set your girl’s eyes and head to stare toward a specific target like the camera, genitalia, et cetera. If you so wish, you can also set the eyes and head focus on different targets — for example, the head can point forward while the eyes stare at the camera.

The girls will be able to express different emotions of pleasure while having sex. They can either enjoy the sex or show resistance by cries and screams of disgust and everything in between. While these do not appear to be player-controlled choices, at least for now, different sex poses provide different emotional reactions from the girls.

The Sex Simulator has a simple pleasure meter that fills up quickly the further the sex progresses and once having reached the max amount, you are able to initiate climax animation where you choose to cum either inside or outside the girl.

Fallen Doll: Operation Lovecraft features many strange-looking creatures varying from tentacle monsters to insects, reptilians, and more. You can also enjoy girl-on-girl lesbian action, as well as straight sex between male and female characters.

You will be able to enjoy fetishes such as monsters, machines, bestiality, tentacles, futanari, BDSM, hardcore, and vanilla. As the development progresses, more options will become available.

VR Support

Fallen Doll: Operation Lovecraft has VR support. Just like the gameplay itself, we are yet to learn more about what aspects of the game utilize VR function, but naturally, you can at least enjoy adult scenes in VR. All the adult scenes are equipped with a first-person view camera mode on top of the third-person camera mode.

The VR version currently is said to support HTC Vive, Oculus Touch, Windows MR, Valve Index, and other headsets with similar controller mapping.


To learn more about Fallen Doll adult content and see what new H-animations it holds inside, take a look at the over 3 hours long Fallen Doll Sex Demonstration 0.34 version.

If you wish to get your hands on Fallen Doll, you can download a playable demo for free from Project Helius’ official website. If you want to unlock all the sex scenes currently available, visit Project Helius’ Patreon and become a patron to download the latest test build. You can also follow Project Helius on Twitter to learn more about their game and future announcements.

For more erotic 3D games featuring monsters and aliens, check out Subverse.

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