Girl Genius: Adventures in Castle Heterodyne costs today from 5,99 € on PC. Its lowest recorded price on PC was 5,99 € (July 2026). We monitor 48 verified stores and have tracked its price for 60 days.
Very Positive 58 reviews on Steam
Prices include the GoCDKeys coupon where one applies and exclude store payment fees. The final price is confirmed on each platform page.
Girl Genius: Adventures in Castle Heterodyne has gone as low as 5,99 € over the last 6 months (July 2026).
Last 6 months · the hollow circle marks each platform’s lowest price.
The lowest price we’ve recorded for Girl Genius: Adventures in Castle Heterodyne is 5,99 € on PC (Instant Gaming, July 2026). Right now, PC is practically back at that low. That low landed during Steam’s Summer Sale — that is when the PC price really moves.
We have tracked Girl Genius: Adventures in Castle Heterodyne since July 7, 2026 among the 48 verified stores we monitor, reading prices every 2 hours. Prices shown are activation-code format unless stated otherwise; out-of-stock offers and outlier listings are excluded.
| Platform | Apr | May | Jun | Jul | Aug | Sep |
|---|---|---|---|---|---|---|
| PC | — | — | — | 5,99 € | 5,99 € | 5,99 € |
PC is the only platform with an offer today, at 5,99 €.
| Platform | Current price | Lowest it has ever been | What it usually costs | Verdict | Offers |
|---|---|---|---|---|---|
| PC | Default format: 5,99 € With accounts: 5,99 € Steam Key format price | Default format: 5,99 € With accounts: 5,99 € | Default format: no reliable average yet With accounts: no reliable average yet | Default format: Not enough data With accounts: Not enough data | Steam Key (2) → |
Today only PC has a price in this format: 5,99 €.
On PC the price has held at 5,99 € since July 2026.
On PC the price is at its usual level and the next Steam sale starts on October 1, 2026: that is the date to watch.
On PC, Girl Genius: Adventures in Castle Heterodyne costs 5,99 € against the 28,99 € charged by Steam: 79% less.
| Platform | Official store | Official price | Best price here | Saving |
|---|---|---|---|---|
| PC | Steam | 28,99 € | 5,99 € | −23,00 € −79% |
The biggest saving is on PC: 23,00 € less than at Steam.
The most common questions about Girl Genius: Adventures in Castle Heterodyne’s price, answered with today’s data.
Girl Genius: Adventures in Castle Heterodyne costs today from 5,99 € on PC. Compared among the 48 verified stores we monitor, updated every 2 hours.
On PC: 5,99 €, the only platform with an offer right now.
Its lowest price so far was 5,99 € on PC (July 2026). The next Steam sale starts on October 1, 2026: if you can wait, it pays off. Set an alert and we will tell you when it drops.
No: it is at its usual price on every platform. Set an alert for the next drop.
The stores we compare source their codes in different markets and compete with each other, so their prices drop sooner and further than those on Steam. The code is the same and activates the same way in your account.
5,99 € on PC, at Instant Gaming (July 2026).
We have no record of it dropping on a previous Black Friday. This year it falls on November 27, 2026: set an alert and we will tell you if it drops.
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