Steam Deck, SteamOS and gamepads
Steam Deck is listed as Unsupported for graphics performance, SteamOS as Playable, and the game has full controller support on desktop. Players report a DualShock 4 recognition bug; Xbox-style pads work out of the box.
The compatibility picture here is unusually confusing, because the demo and the full game disagree. In September 2026 the developers announced that controller support was live and the game was "fully compatible with Steam Deck". Two months later, the full game's store page lists Steam Deck as Unsupported. Both statements are real, and the difference is the build they refer to.
What the store page says right now
| Platform | Status | Official reason |
|---|---|---|
| Steam Deck | Unsupported | Graphics performance |
| SteamOS (desktop / handheld) | Playable | Runs, with caveats |
| Steam Machine / controller-first setup | Full controller support | Default pad configuration works |
| Windows desktop | Supported | The primary platform |
The Deck rating is not a "we did not test it" placeholder. Steam's compatibility review returns a specific category, and the one attached to this game is Unsupported with a graphics-performance reason — meaning the reviewer expects frame pacing or rendering problems on Deck hardware rather than a control or text-size problem.
"SteamOS Playable" is the softer rating: it runs on the OS, but expect to adjust settings and possibly text size.
The demo says something else
The 17 September 2026 demo update reads, in the developers' own words, that "controller support is now live, and the game is fully compatible with Steam Deck". That was two months before launch, and it was about the demo build.
The demo is a two-hour slice. The full game is twenty hours with more characters on screen, more effects, and 40 CGs at higher resolution. A slice can pass a Deck check that the full build fails, which is the most likely explanation for the gap — and it is also why the demo is worth two hours of your time if Deck is your platform: it tells you how the game actually runs for you.
Controllers on desktop
Full controller support is a listed Steam feature, which in Steam's terms means the game can be played start to finish with a pad and shows correct button prompts. The demo update in September 2026 added that support, and the November 2025 patch before it added hotkey customisation, which applies to pads as well as keyboards.
One reported problem, from the Steam discussion hub in launch week: DualShock 4 pads are not always recognised, and players report PS button prompts where they expect Xbox ones. It is a player report rather than a published known issue, and the standard fixes are worth trying in order:
| Symptom | Try this |
|---|---|
| Pad not detected at all | Steam > Settings > Controller > enable the correct controller type, then restart the game |
| Detected but prompts are wrong | Toggle Steam Input off, or set the layout to "gamepad with joystick trackpad" |
| Buttons register in menus but not in debates | Check whether the debate action is bound to a key the pad does not send; rebind in the game's own settings |
| Pad works, game stutters | That is the Deck-side performance issue, not the pad |
Keyboard and mouse
The store lists both Keyboard Only Option and Mouse Only Option as supported, which is rarer than it sounds. In practice:
- Keyboard only: everything in the game can be driven from the keyboard, including investigation cursors and debate selection.
- Mouse only: the reverse — clicking through dialogue, examining objects and choosing statements. Useful for accessibility setups and for playing on a laptop trackpad.
Both are worth knowing if you play with one hand, or if you stream with a controller in one hand and a keyboard in the other.
If you want to play handheld anyway
Without an official Deck rating, the honest options are:
Play the demo on the Deck first. It is free and it is the only Deck-verified build. If the demo holds 30 frames in the busiest scenes, the full game probably will too, with settings lowered.
Try SteamOS on desktop. The Playable rating suggests the renderer and input work; the reservation is performance.
Use Steam Remote Play from a desktop. The game is turn-based reading plus timed arguments, and remote play latency is tolerable for that. It also sidesteps the graphics problem entirely.
Wait. Compatibility ratings change, and a game that shipped two days ago with an active patch history is a reasonable candidate for a re-review. The developers have already shipped one Deck support pass on the demo.
The rest of the compatibility list
Beyond pads and handhelds, the store tags this game with a set of features that mostly matter to accessibility and to how you play:
| Feature | What it means |
|---|---|
| Playable without Timed Input | The timed debates can be handled without a hard clock |
| Save Anytime | No checkpoint dependency; save mid-investigation |
| Adjustable Difficulty | Multiple difficulty settings |
| Subtitle Options | Subtitle size and display are configurable |
| Colour Alternatives | Colour-blind / colour-vision alternates |
| Custom Volume Controls | Separate sliders rather than one master |
| Stereo Sound | Two-channel mix, no surround requirement |
Those are covered in detail in settings and accessibility, which is the page to read if the question is not "will it run" but "can I play it the way I need to".
The short version
Desktop with a controller: fine. Desktop with keyboard or mouse only: fine. Steam Deck: officially no, and the demo is the only build with a Deck claim on it. If you are buying specifically for handheld play, the demo file explains exactly what that free build contains.
Compatibility statuses are from the Steam store page feature list and Steam's own compatibility data, as displayed on 6 November 2026; the Deck claim is quoted from the official demo update announcement of 17 September 2026; the DualShock 4 report is from a player thread on the Steam hub in launch week.
