Duet Night Abyss runs on Linux via Proton with no special tweaks needed. It works on recent community Proton builds — Proton-GE (latest), Proton-TKG (10/25), and Proton-CachyOS (10/23) — and behaves like a standard Windows title launched through Steam Play.

What works on Linux right now (Proton status)

  • Launches and plays under Proton without additional flags or custom overrides.
  • Confirmed Proton variants: Proton-GE (latest), Proton-TKG (10/25), Proton-CachyOS (10/23).
  • If you prefer stock Proton, you can start there; switch to a GE/TKG build if you see graphics or login hiccups.

Tip: If you are experimenting across Proton builds, keep shader pre-caching enabled in Steam so subsequent launches compile faster.

Known issues on Linux and quick fixes

  • All-white scene on first launch (Proton-CachyOS): The game may render a white screen and block the login UI on initial boot. Quit and relaunch once; shader compilation finishes and the scene renders normally.
  • Google sign-in stall: After choosing Google, the auth window can load but then hang on a white screen. Use the email login method instead; it completes normally.

These issues are reproducible but intermittent. A single restart typically clears the rendering bug; avoiding Google SSO sidesteps the login stall.

Where to get Duet Night Abyss on PC

The game is available on Steam; the store listing publishes the current PC specs and download. Grab it from the Steam page.

It’s also offered via the official PC launcher, and the studio positions the game with player-friendly systems — all characters and weapons are free to unlock on the official site.

System requirements (Steam listing)

Requirement Minimum Recommended
OS Windows 7 64-bit Windows 10 64-bit
Processor Intel Core i5 (9th) / AMD Ryzen 5 2600X or above Intel Core i7 (10th) / AMD Ryzen 7 3700X and above
Memory 16GB RAM 32GB RAM
Graphics NVIDIA GeForce GTX 1060 / AMD Radeon RX 580 NVIDIA GeForce RTX 2060 / AMD Radeon RX 5700 XT
Storage 32GB available 40GB available
Network Broadband internet connection Broadband internet connection

On Linux, target hardware in the “recommended” column for a smoother experience under Proton, especially at higher frame rates.

Bottom line

Expect Duet Night Abyss to run on Linux through Proton with minimal effort. If your first boot renders a white scene, relaunch once to let shaders finish, and use email login if Google SSO stalls. Install from Steam or the official launcher and you’re set — with the added bonus that characters and weapons are free to unlock.