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About Girl Genius: Adventures in Castle Heterodyne
A fabulous Action Adventure game based on the award winning graphic novel series Girl Genius by Phil & Kaja Foglio.
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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.
Game modes: Single player
Right now the lowest price for Girl Genius: Adventures in Castle Heterodyne we're tracking is $4.85 at Gamivo — 84% below Steam's $29.99. We compare 6 stores and prices refresh every few minutes.
The lowest price we've recorded for Girl Genius: Adventures in Castle Heterodyne is $4.34 at Kinguin on September 25, 2026. The current best price is about 12% above that low.
87% of 58 Steam user reviews for Girl Genius: Adventures in Castle Heterodyne are positive ("Very Positive").
Girl Genius: Adventures in Castle Heterodyne released on September 5, 2023, developed by Rain Games and published by Rain Games.
Girl Genius: Adventures in Castle Heterodyne is available on PlayStation 4, Linux, PC (Microsoft Windows), PlayStation 5, Mac, Nintendo Switch. It supports single player.
Girl Genius: Adventures in Castle Heterodyne last hit a new low of $4.34 on September 25, 2026 at Kinguin. Current best price is $4.85. Prices on this page refresh every few minutes, so check back around seasonal sales for new lows.
The cheapest Girl Genius: Adventures in Castle Heterodyne price right now is $4.85 at Gamivo, 84% below the Steam price.
| Store | Price | Buy link |
|---|---|---|
 GamivoBest price | $4.85 | Buy Girl Genius: Adventures in Castle Heterodyne at Gamivo |
 Kinguin | $4.86 | Buy Girl Genius: Adventures in Castle Heterodyne at Kinguin |
 Loaded | $6.69-80% | Buy Girl Genius: Adventures in Castle Heterodyne at Loaded |
 Instant Gaming | $6.74-79% | Buy Girl Genius: Adventures in Castle Heterodyne at Instant Gaming |
 Steam | $29.99 | Buy Girl Genius: Adventures in Castle Heterodyne at Steam |
 Green Man Gaming | $29.99 | Buy Girl Genius: Adventures in Castle Heterodyne at Green Man Gaming |
All-time low: $4.34 at Kinguin on Sep 25, 2026 — the current best price is 12% above it.
Prices in USD, refreshed every few minutes. Switch currency on this page for EUR/GBP/BRL and more.
