Ys IX: Monstrum Nox on the Steam Machine
Can the Steam Machine run Ys IX: Monstrum Nox?
Yes — Ys IX: Monstrum Nox, a 2021 RPG, rates green on the Steam Machine at 1080p.
Derived from Valve's SteamOS testing (it's also Deck Verified), not a measured frame-rate. Recommended RAM is 16 GB — exactly the Machine's 16 GB.
Key facts: Ys IX: Monstrum Nox on Steam Machine
- Compatibility
- Runs great (works). Inferred from Valve's SteamOS compatibility rating.
- Device & mode
- Steam Machine: Runs great — Runs locally on SteamOS (1080p default)
- Steam Deck: Deck Verified — Runs locally on the handheld (800p)
- Steam Frame: Native status: unknown — Flatscreen — streamed from a Steam Machine to a virtual screen; native play not rated
- Performance
- No frame-rate data — we don't publish a number we don't hold.
- Conditions
- None recorded — there is no frame-rate test to describe.
- Basis
- Derived from SteamOS compatibility · 2 sources (2 linked) · data as of · methodology
- Limitations
- No frame-rate measured — the verdict is inferred from Valve's SteamOS compatibility rating.
- Not recorded here: anti-cheat status, frame generation, game / SteamOS / Proton versions.
At a glance across Valve's SteamOS devices
Analysis — Ys IX: Monstrum Nox on the Steam Machine
RPGs swing between light dungeons and busy hub towns, and the towns are the Zen 4 CPU's real test. If the frame-rate dips there, cut NPC density and draw distance before touching resolution.
Spend the headroom on image quality — 1440p output with FSR Quality — rather than settings that barely move the picture.
26 ProtonDB reports rate it Platinum (runs perfectly out of the box), in line with Valve's Deck Verified rating.
Steam lists full controller support, so it plays from the sofa without a keyboard. It also has shared/split-screen co-op on Steam's list, which suits a living-room box with a second controller.
Frequently asked
Is Ys IX: Monstrum Nox Steam Deck Verified?
Yes — Ys IX: Monstrum Nox is Steam Deck Verified.
Search other key stores for Ys IX: Monstrum Nox — stock and price aren't checked by us (not Steam)
Real Steam Machine FPS reports like yours replace our derived estimates, one game at a time.
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How we know this
Inferred from this title's official SteamOS compatibility rating, scaled to the Machine's roughly 6× Deck GPU power.
- Valve SteamOS compatibility: Compatible · Valve (Steam store)
- ProtonDB: Platinum, 26 reports · ProtonDBIndependent community signal shown alongside our verdict, not used to compute it.
Every verdict is labelled by confidence. Numbers are estimates unless tagged “measured.”
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