Ys IX: Monstrum Nox

#1351630

While imprisoned in Balduq, Adol is cursed and becomes a Monstrum. With his newfound powers, he must stop the Grimwald Nox from consuming the city.

Recommendation

ProtonGreat

Only Proton reports exist so far.

Compatibility

Proton

Great

CurrentMedium confidence

28 reports · Medium confidence: more recent reports would firm this up.

NativeNone

No native Linux build — Proton only

Desktop

Great

CurrentMedium confidence

28 reports · Medium confidence: more recent reports would firm this up.

HandheldUnknown

No reports yet

Anti-cheatUnknown

No anti-cheat reports yet

Summary based mostly on historical data from ProtonDB. Fresh reports from your setup help keep it current.

Freshness:Current28 reports · last updated May 26, 2026

No guide cards yet — curated troubleshooting for Ys IX: Monstrum Nox will appear here.

PathOutcomeDeviceFreshnessAnti-cheat

28 of 28 reports