Single-player games like 21+
Below are 16 single-player Steam games similar to 21+, 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 21+ page.
Ranked picks
- 1
Pleasure Puzzle:Sexy Girls 趣拼拼：性感少女
Single-player alternative to 21+ — playable solo, no multiplayer required. Shares Casual with 21+.
Import pictures to create a custom jigsaw album that you will never finish playing. One key to import local images! Use F12 screenshots! Share your artistic taste with the world!
- 2
SENRAN KAGURA Bon Appétit! - Full Course
Single-player alternative to 21+ — playable solo, no multiplayer required. Shares Casual with 21+.
The busty shinobi of SENRAN KAGURA exchange their kunais for kitchen knives in this epic cooking/rhythm showdown! Culinary warfare is carried out via rhythm battles, and players who can create the ultimate Super Dish may be treated to a special feast for the eyes as well.
- 3
Tricolour Lovestory
Single-player alternative to 21+ — playable solo, no multiplayer required. Shares Casual with 21+.
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!
- 4
NEKOPARA Vol. 0
Single-player alternative to 21+ — playable solo, no multiplayer required. Shares Casual with 21+.
Please note that NEKOPARA Vol. 0 is a fandisc for NEKOPARA Vol. 1What's NEKOPARA? Why, it's a cat paradise! This is a story just before Kashou opened "La Soleil".Enjoy a page from the leisurely, daily lives of Shigure and the Minaduki household's catgirls!
- 5
Summer Pockets
Single-player alternative to 21+ — playable solo, no multiplayer required. Shares Casual with 21+.
From the creators of Angel Beats! and CLANNAD, Key, comes their latest emotional, award-winning journey. Follow protagonist Takahara Hairi as he travels to the secluded island Torishirojima, where he rediscovers what it means to enjoy summer vacation.
- 6
Gaokao.Love.100Days
Single-player alternative to 21+ — playable solo, no multiplayer required. Shares Casual with 21+.
Getting a girl-friend before National College Entrance Exam, I know it's crazy, but from today, we will face everything together.
- 7
Sword Art Online: Hollow Realization Deluxe Edition
Single-player alternative to 21+ — playable solo, no multiplayer required. Shares Casual with 21+.
2026, Sword Art: Origin, a new VRMMORPG has emerged. Kirito meets a mysterious NPC and receives a cryptic message. This game is definitively not the same as the one he escaped years ago…
- 8
Wet Girl
Single-player alternative to 21+ — playable solo, no multiplayer required. Shares Casual with 21+.
This is a unique first-person spraying game. Take a water gun and spray the hot dancing girls, and when you wet their clothes completely, you win. When you see their angry expressions or hear them panting, don't stop spraying just for the sake of your pity on them.
- 9
Hentai Shooter 3D
Single-player alternative to 21+ — playable solo, no multiplayer required.
"Hentai Shooter 3D" - First person shooter with spirit of good old days .
- 10
Cute Cats
Single-player alternative to 21+ — playable solo, no multiplayer required. Shares Casual with 21+.
Cute cats want to play with you! Chill out with them in your free time! Find differences between two nearly similar artistic paintings.
- 11
18+
Single-player alternative to 21+ — playable solo, no multiplayer required. Shares Casual with 21+.
Collection of logic riddles with 5,000 achievements..
- 12
Trash Story
Single-player alternative to 21+ — playable solo, no multiplayer required. Shares Casual with 21+.
5000 achievements. Trash style kinetic novel, created by one man. Short life story with naughty jokes, memes, author made pictures and not ordinary voiceover.
- 13
Cute Dogs
Single-player alternative to 21+ — playable solo, no multiplayer required. Shares Casual with 21+.
Is it possible to buy some happiness with money? Who knows, but you can buy yourself a dog! Look, how cute they are! Play with our fluffy little fellas, a «find-differences» game. These cute little puppies can help you relax and find some peace of mind.
- 14
Cute Cats 3
Single-player alternative to 21+ — playable solo, no multiplayer required. Shares Casual with 21+.
Kittens come back to challenge you once again! Test your memory and attentiveness. Play a new chapter of the beloved puzzle game and find all differences in pictures with our cute fellas.
- 15
Gabenwood: 99 Hidden Bucks
Single-player alternative to 21+ — playable solo, no multiplayer required. Shares Casual with 21+.
This is a hidden objects puzzle game what will test your wit and attentivnes. Save the Universe from destruction! Go to the Gabenwoods and find 99 bucks transferred there by some evil guy from our world.
- 16
Cute Cats 2
Single-player alternative to 21+ — playable solo, no multiplayer required. Shares Casual with 21+.
Cute kittens are back in action! These fluffy fellas would train your memory and attention. Spend your time with pleasure and benefit. Compare pictures with cute kittens and find differences between them.