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Open At Nine
#2270600“Massive debt, a shabby brothel, and a naughty succubus… This is all I get for defeating the Demon God?!” Hire monster girls to attract customers and pay off your debts! Don't forget to give your girls lots of hands-on job training!
Recommendation
ProtonGreat
Needs confirmationLow confidence
Only Proton reports exist so far.
Last report Jan 13, 2026
Compatibility
Proton
Great
Needs confirmationLow confidence
1 report · Low confidence: very few recent reports yet.
NativeNone
No native Linux build — Proton only
Anti-cheatUnknown
No anti-cheat reports yet
Reports(1)
Most of this is historical ProtonDB data (newest from Jan 13, 2026) and needs a fresh report to confirm it still holds.
Add a fresh report