Girl Genius: Adventures In Castle Heterodyne
Released Sep 2023
A fabulous Action Adventure game based on the wonderful graphic novel series, Girl Genius™, by authors Phil & Kaja Foglio.
87% positive · 113 reviews
Done
All announced content has been released
High confidence
Done
All announced content has been released
High confidence
Where to buy
Steam $29.99 Green Man Gaming Steam key $29.99
Can't confirm — worth a look
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Evaluation
Girl Genius: Adventures In Castle Heterodyne launched on September 5, 2023 as a complete, self-contained action-adventure game based on the Girl Genius graphic novel series. The store description presents the game as a finished product with no mention of planned expansions, DLC, or ongoing content phases.
Since launch, Rain Games has issued several maintenance patches — fixing bugs, improving accessibility, and refining quality-of-life elements — with the most recent developer communication being a minor menu behavior update on October 28, 2025. There are no DLC listings of any kind, no roadmaps, no announcements of future content, and no developer statements about plans for additional content. The 12 news posts scanned include zero major content drops and zero announcements of upcoming content.
The game was shipped as a complete package and has since received only polish and bug fixes to improve the experience. There is no evidence of any additional content being planned or in development.
Evidence
Store description presents a complete, self-contained game with no mention of DLC, expansions, or ongoing content plans
Most recent developer communication: a minor update adjusting sidebar menu behavior. No mention of future content or development plans.
Media
Details
Developer
Publisher
Rain Games
Achievements
33
Platform
Windows, macOS, Linux
Controller
full support
Steam Deck
Verified
Players
Single-player
About this game
ACTION, RRRRRROMANCE (pronounced like Provence) and MAD SCIENCE!
Discover the award winning, gaslamp fantasy world of “Girl Genius™”! Experience Agatha Heterodyne’s story, as she navigates the hostile hallways, catacombs and kitchens of her ancestral home, Castle Heterodyne.As the Lost Heir to a mad family, she must return the ancient fortress to its former glory and ascend the throne as a "True Heterodyne". Only then can she stand up to the might of the Wulfenbach Empire and other power hungry usurpers. But first, she has to contend with a corrupted and insane AI controlling the castle, its spiky death traps, and bottomless doom-pits. Not to mention the painfully pink cherry on top, Zola Heterodyne. Another lost child? Or just another villain here to steal your thunder.
Time to find out.
Gameplay
- Build tools like the Grapple Gun and the Wrencherang at the Workbench, and use your tools to explore and solve the castle’s challenges.
- Discover numerous sights and secrets, by being perceptive and using your tools to the fullest.
- Defeat foes in furious melee combat or with explosive gadgets, and utilize the environment to your advantage using your tools.
- Use your trusty Dingbot minion to explore places Agatha can’t reach, by moving in tight spaces, digging beneath or soaring above danger.
- Use the Dingbot to solve lock puzzles, and operate the internal machinery of the castle.
- As Agatha’s power over the castle grows, command the castle AI to release traps at your foes, and activate mechanisms.
- Use the unique “Build System”, rebuilding scrap traps into objects like the Springclank, Grappleclank and the special Rollerclank, giving the player a suite of tools for creative spatial puzzle solving.
- Interact with several of the fantastic characters from “Girl Genius™”, like Gilgamesh Wulfenbach, Tarvek Sturmvoraus and many others.
- Read the Girl Genius™ graphic novels in the game! Note! This feature is in English only.
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Last evaluated Jun 22, 2026
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