Single-player games like Alien
Below are 15 single-player Steam games similar to Alien, 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 Alien page.
Ranked picks
- 1

Dream Daddy: A Dad Dating Simulator
Single-player alternative to Alien — playable solo, no multiplayer required. Shares Indie and Simulation with Alien.
Dream Daddy: A Dad Dating Simulator is a game where you play as a Dad and your goal is to meet and romance other hot Dads. Are you ready? Hi ready, I'm Dad.
- 2

Lust Theory - Season 1
Single-player alternative to Alien — playable solo, no multiplayer required. Shares Indie and Simulation with Alien.
Lust Theory is an adult Visual Novel in which you take control of a 20-year-old guy whose life is turned upside down when he finds out the same day is repeating. The game is packed with sex, humor, romance, drama and mystery.
- 3

Living together with Fox Demon
Single-player alternative to Alien — playable solo, no multiplayer required. Shares Simulation and Casual with Alien.
You encountered a snowstorm while climbing a snowy mountain. You saved an injured fox demon in the snow and brought her back home to start a sweet life together...
- 4

Tricolour Lovestory
Single-player alternative to Alien — playable solo, no multiplayer required. Shares Indie and Casual with Alien.
Time flies and never comes back. But with an incredible 1-million-word script and 100+ original CGs, this game will take you back to when you were young, simple and pure. Go and get the love of your life back, start something new, or end everything in flame, that's for you to decide!
- 5

Sex College 🔞
Single-player alternative to Alien — playable solo, no multiplayer required. Shares Indie and Simulation with Alien.
Welcome to the world of Sex College🔞, an exciting adult only visual novel that will unravel the secrets of college life and love!
- 6

Sex Dorm🔞
Single-player alternative to Alien — playable solo, no multiplayer required. Shares Indie and Simulation with Alien.
Sex Dorm🔞 – A visual novel where you play as a student from Japan who moves to the U.S. to experience college life. Explore new cultures, build relationships, work part-time, and dive into your hidden desires in the world of university life.
- 7

Orgasm Academy 💦
Single-player alternative to Alien — playable solo, no multiplayer required. Shares Indie and Simulation with Alien.
Welcome to Orgasm Academy💦, an exhilarating adult only visual novel that transforms your studies into the most thrilling game of your life!
- 8

NEKOPARA Vol. 1
Single-player alternative to Alien — playable solo, no multiplayer required. Shares Casual and Indie with Alien.
What's NEKOPARA? Why, it's a cat paradise! Kashou Minaduki, the son of a long line of Japanese confection makers moved out to open his own shop "La Soleil" as a patisserie.
- 9

Final Boss
Single-player alternative to Alien — playable solo, no multiplayer required. Shares Simulation and Casual with Alien.
Final Boss is a visual novel exclusively for adults! This game will immerse you headlong into the story of a guy who meets a nice girl at a party. This girl turned out to be a sexy girl who loves sex very much.
- 10

Lustful Assistant
Single-player alternative to Alien — playable solo, no multiplayer required. Shares Simulation and Casual with Alien.
Lustful Assistant is a visual novel exclusively for adults! This story tells the story of a guy who hired a very sexy girl. Working together, they became very close. Their communication very quickly led to sex.
- 11

Sex Teacher
Single-player alternative to Alien — playable solo, no multiplayer required. Shares Simulation and Casual with Alien.
Sex Teacher is a visual novel exclusively for adults! This story is about two young senior students. Erika is writing her thesis about sex, but she has never done it! Her friend Aaron rushes to help her!
- 12

性感的金发女郎
Single-player alternative to Alien — playable solo, no multiplayer required. Shares Indie and Simulation with Alien.
Sexy Blonde is a visual novel exclusively for adults! This game will immerse you in the dizzying story of a man and a woman who love to have sex! Sexy blonde is waiting for her husband to suck his cock!!!
- 13

Bad Santa
Single-player alternative to Alien — playable solo, no multiplayer required. Shares Indie and Simulation with Alien.
Bad Santa is a visual novel exclusively for adults! This story is about the girl Florance, who broke up with her boyfriend. She hasn't had sex in a very long time. And for Christmas she asked Santa to come and fuck her! Her wish came true!
- 14

Lustful Vampire
Single-player alternative to Alien — playable solo, no multiplayer required. Shares Indie and Simulation with Alien.
Lustful Vampire is a visual novel exclusively for adults! This story is about how a jewel seeker was looking for a very expensive ring. But instead of a ring, she met a vampire who simply fucked her in all holes!
- 15

Sex on the beach
Single-player alternative to Alien — playable solo, no multiplayer required. Shares Indie and Simulation with Alien.
Sex on the beach is a visual novel exclusively for adults! This is a simple story about a girl who really wants to fuck. She spots a sex-friendly guy who turns out to be a doctor. The girl initiates her fall to get his attention...