Girl Genius: Adventures In Castle Heterodyne

A steampunk action-adventure where you turn traps into puzzle-solving machines

Rain Games · Released Sep 5, 2023

Reviews: Very Positive; 87% of 60
Recent reviews: Not enough recent
Players: 0; daily peak, Oct 28, 2026
Steam Deck: Verified
Last update on Steam: 1 year ago; Oct 28, 2025
Minimum PC: DX10; 4 GB disk; Full requirements

What is Girl Genius: Adventures In Castle Heterodyne?

You play Agatha Heterodyne in a single-player 3D action-adventure about reclaiming her ancestral castle, which is controlled by a corrupted AI. You explore halls and catacombs, build gadgets, solve spatial puzzles, and fight with melee attacks and explosives. You also control a small robot that enters tight spaces and operates machinery.

For you if...

+you enjoy searching for optional secrets
+you like mad science and comic humor

Not for you if...

−you prefer stories with very little dialogue

What players say

87% of 60 reviews are positive

Players praise the adaptation's faithfulness to the comics and its puzzles. Combat draws more mixed reactions, with complaints about demanding boss fights and the difficulty on Hard.

Screenshots and trailer

Girl Genius: Adventures In Castle Heterodyne screenshot 1

Girl Genius: Adventures In Castle Heterodyne system requirements

Minimum: DX10, 4 GB of disk space.

As published by the developer.

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Minimum

OS: Windows 7 (SP1+), Windows 10 and Windows 11, 64-bit versions only.
Processor: X64 architecture with SSE2 instruction set support
Graphics: DX10, DX11, and DX12-capable GPUs
Storage: 4 GB available space

Does Girl Genius: Adventures In Castle Heterodyne have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Single-player

Does Girl Genius: Adventures In Castle Heterodyne run on Steam Deck?

Verified Yes, Verified by Valve: it works on Steam Deck out of the box.

All functionality is accessible with the default controller configuration
Shows Steam Deck controller icons
In-game text is legible on Steam Deck
Default graphics settings perform well on Steam Deck

PC version details

DRM: None declared on Steam
Controller: Full controller support
Platforms: Windows, macOS, Linux
Achievements: 33
Steam features: Cloud saves, Family Sharing
Languages: Text only: English, Norwegian.

Does Girl Genius: Adventures In Castle Heterodyne use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 28, 2026. How to filter AI games on Steam