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Cassia and the Sealed Laboratory v1.0
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Cassia and the Sealed Laboratory is a adult 2d game game made on the RPGM engine by VEYAbbo. It was first released in June 2026 and last updated in July 2026. The game runs on Windows and is available in English (MTL).
Overview
Cassia, who has just been appointed as the new director of the research institute, meets her junior colleague Ren and is being given a tour of the facility.
However, a test subject suddenly escapes, causing the entire institute to be shut down—and even the power to go out...
Due to the gas emitted by the escaped test subject, men’s bodies mutate and they lose their sanity,
while Cassia, a woman, finds her sexual desire gradually increasing.
However, a test subject suddenly escapes, causing the entire institute to be shut down—and even the power to go out...
Due to the gas emitted by the escaped test subject, men’s bodies mutate and they lose their sanity,
while Cassia, a woman, finds her sexual desire gradually increasing.
Features
Players can expect content tagged rape, sexual harassment, stripping, vaginal sex, virgin, 2dcg, ahegao and big ass.
Frequently Asked Questions
Is Cassia and the Sealed Laboratory free to download?
Yes — you can download Cassia and the Sealed Laboratory for free using the download links provided on this page.
What engine is Cassia and the Sealed Laboratory built on?
It runs on the RPGM engine.
What platforms does Cassia and the Sealed Laboratory support?
You can play Cassia and the Sealed Laboratory on Windows.
What language is Cassia and the Sealed Laboratory in?
Cassia and the Sealed Laboratory is available in English (MTL).
Screenshots
Download Links
These links lead to external hosting providers. Use at your own risk.
Developer Notes
Game System
This is a short RPG with an erotic focus.
There are no combat scenes in this game.
Some events trigger automatically as the story progresses, while others are triggered as you explore on your own.
If you get stuck during gameplay, please refer to the text file titled “Walkthrough Hints.”
All ending CGs are presented as full-screen events.
Please note that some scenes may be misinterpreted as NTR by some players.
Virgin play is available!
More links may be in the source thread (registration required).
Source Thread
