Single-player games like Open At Nine
Below are 10 single-player Steam games similar to Open At Nine, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Open At Nine page.
Ranked picks
- 1

Guardians of Eden-Embrace of the Forest
Single-player alternative to Open At Nine — playable solo, no multiplayer required. Shares Casual with Open At Nine.
Tend to the needs of seven alluring Valkyries and defend humanity's last sanctuary in this lewd tower defense game!
- 2

AV Director Life!
Single-player alternative to Open At Nine — playable solo, no multiplayer required. Shares Simulation and Casual with Open At Nine.
AV production simulation game you can freely film, edit, and sell your creations! Work with charming heroines to produce top-tier masterpieces, boost your reputation, and grow your sales. Striving to pay off your debts, take on the fiery challenge of reaching the top of the industry as a director!
- 3

Isekai Sex Boutique
Single-player alternative to Open At Nine — playable solo, no multiplayer required. Shares Simulation and Casual with Open At Nine.
You mysteriously find yourself in another world and, as a lover of sex toys, you decide to jump on a business opportunity to start a new life. Run a sex shop with a haughty heiress and hot employees from a variety of races, and make this the best sex shop in the (other) world!
- 4

Workplace Fantasy
Single-player alternative to Open At Nine — playable solo, no multiplayer required.
"Workplace Fantasy" is an action-adventure love story about a man's enchanting encounters with a gentle older sister, an adorable younger sister, an older university female, female colleagues, female supervisors, beautiful saleswomen, mysterious angels, and even a female succubus and a female ghost.
- 5

AURA: Hentai Cards
Single-player alternative to Open At Nine — playable solo, no multiplayer required. Shares Casual with Open At Nine.
AURA: Hentai Cards is a fascinating 2D erotic visual novel and collectible card game where magic, romance, and adventure come together! Build your harem by seducing women and save the world from the Demon Queen, or join her army!
- 6

My Neighbor's Lonely Wife 2
Single-player alternative to Open At Nine — playable solo, no multiplayer required. Shares Simulation with Open At Nine.
After moving to a new house, you quickly meet the beautiful young wife next door, Haruka Aoi. Chat with her, befriend her, and make her lonely heart slowly succumb to your charms.
- 7

Quickie: A Love Hotel Story
Single-player alternative to Open At Nine — playable solo, no multiplayer required. Shares Simulation with Open At Nine.
Dive into the streets of Tokyo as a love hotel manager and embark on a thrilling journey of romance with stunning women in this casual and erotic dating-sim. Who will capture your heart in this Love Hotel Story?
- 8

Peeping Dorm Manager
Single-player alternative to Open At Nine — playable solo, no multiplayer required.
repairing utilities, cleaning, and taking out the garbage! These are the essential skills for a dormitory manager! Of course, there are also mundane tasks like Yet, they can't deter you from living with cute college girls, obtaining valuable information from the dormitory, and wooing your tenants!
- 9

Monster Girl Club Bifrost
Single-player alternative to Open At Nine — playable solo, no multiplayer required. Shares Simulation with Open At Nine.
Pay back your debt to the Grim Reaper in this management simulation game! You're a monster trainer in an up-and-coming nightclub where the lovely ladies of the night are enslaved monster girls trained by you. Win your freedom back no matter what it takes!
- 10

Sweet Succubus Home
Single-player alternative to Open At Nine — playable solo, no multiplayer required. Shares Casual with Open At Nine.
A recently laid-off musician picks up a girl on the street—turns out she’s a succubus!? To make ends meet, they start streaming music together. Rhythm game meets visual novel in a sweet and spicy cohabitation with your new demon roommate!