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

SinVR
Single-player alternative to Costume Party — playable solo, no multiplayer required. Shares Simulation and Free To Play with Costume Party.
ENTER the Forbidden World of SinVR. Fulfill your sexual fantasies in your own private dungeon. With a growing library of characters and environments, SinVR is the destination for amusing adult entertainment, in VR or on your PC.
- 2

Time For You - Chapter 01
Single-player alternative to Costume Party — playable solo, no multiplayer required. Shares Simulation with Costume Party.
A story-driven adult dating sim / visual novel with a detective style twist!
- 3

Sexbot Quality Assurance Simulator
Single-player alternative to Costume Party — playable solo, no multiplayer required. Shares Simulation with Costume Party.
Join up! Do your part! There is a long journey ahead And we Need You! Are you ready for the lab? Join the intergalactic quality assurance team and see if you got what it takes to be an quality assurance agent
- 4

Dreamland
Single-player alternative to Costume Party — playable solo, no multiplayer required. Shares Free To Play with Costume Party.
Welcome to Dreamland! A town which hosts the wildest college spring break activities filled with hot girls, parties and sex. However, if you look close enough, you'll discover that Dreamland also hides a dark and horrifying mystery which haunts you and your friends...
- 5

Cherry VX
Single-player alternative to Costume Party — playable solo, no multiplayer required. Shares Simulation with Costume Party.
Cherry VX is a futuristic adult entertainment suite featuring gorgeous models and unmatched interaction. Finally, the technology has come far enough for truly compelling intimate experiences with cybernetic humans. Time to live out your cyberpunk fantasies!
- 6

Dominatrix Simulator: Threshold
Single-player alternative to Costume Party — playable solo, no multiplayer required.
Be immersed in the world of the Goddess. There's no way out and molding you into the perfect submissive plaything is her greatest desire. Will you succumb to the trials of her Mistresses or resist letting go? Choose your own path. You will be judged.
- 7

College Sex Party 🔞
Single-player alternative to Costume Party — playable solo, no multiplayer required. Shares Simulation with Costume Party.
Welcome to the world of College Sex Party 🔞 - an exciting visual novel that immerses you in an unforgettable and enticing student life!
- 8

VR HOT
Single-player alternative to Costume Party — playable solo, no multiplayer required. Shares Simulation with Costume Party.
VR HOT is an immersive VR experience where users create and interact with custom dream partners in dynamic environments. Features include full-body customization, lifelike physics, voice commands, toy sync, and more. A limited Desktop Mode is available for editing characters without VR.
- 9

Space SEX
Single-player alternative to Costume Party — playable solo, no multiplayer required. Shares Simulation with Costume Party.
A sinfully wild Sci-Fi Adventure, with a Happy Ending! Lose yourself in the impressively graphic, stimulated 3D, visually novelistic world of Space SEX.
- 10

Fright Night Sex Fest
Single-player alternative to Costume Party — playable solo, no multiplayer required. Shares Simulation with Costume Party.
This is no Hack-n-slash... this is HACK 'N FLASH! Dark and stormy nights are filled with cock-starved, horny frights. Leave your Carnal Fear behind, on this Night of the Giving Head!
- 11

Girl Next Door
Single-player alternative to Costume Party — playable solo, no multiplayer required. Shares Simulation with Costume Party.
A naughty anthology of domestic encounters gone wild. In this 3D Visual Novel/Sim hybrid, you’ll get to know the neighbors reaaal well. Every inch of them!
- 12

Bambie
Single-player alternative to Costume Party — playable solo, no multiplayer required. Shares Simulation with Costume Party.
Enjoy an approachable erotic simulator that boasts immersive character physics and supports on-the-fly changes. Gameplay is quick to pick up and hard to put down. Get up close and personal as you configure your Bambie doll into the perfect positions for a fashion-tastical climax!
- 13

Futa Tales
Single-player alternative to Costume Party — playable solo, no multiplayer required. Shares Simulation with Costume Party.
Futa Tales, Woo-oo! These ladies are packing HEAT! Explore the depths of Futa City, to uncover hidden tales of the taboo. When the clothes start flying off, prepare to get a whole lot more immersive!
- 14

Costume Fighter
Single-player alternative to Costume Party — playable solo, no multiplayer required. Shares Simulation with Costume Party.
Get ready to brawl in this side-splitting showdown where fighters don't just bring their fists to the fight, but their wackiest costumes and zaniest moves.
- 15

Fetish Club
Single-player alternative to Costume Party — playable solo, no multiplayer required. Shares Simulation with Costume Party.
Latex, Leather and Chains: Explore you deepest Fetish Fantasies!