Games like Oni Onsen Polyamory
Games like Oni Onsen Polyamory include Cities: Skylines, 鬼谷八荒 Tale of Immortal, Totally Accurate Battle Simulator, Kerbal Space Program, and Assetto Corsa. We matched them by the tags players give Oni Onsen Polyamory on Steam (Downloadable Content): closest matches first, and among equally close ones the better-known games.

Cities: Skylines
Shared: Single-player · Simulation · Family Sharing

鬼谷八荒 Tale of Immortal
Shared: Single-player · Family Sharing · Simulation

Totally Accurate Battle Simulator
Shared: Single-player · Simulation · Family Sharing

Kerbal Space Program
Shared: Single-player · Simulation · Family Sharing

Assetto Corsa
Shared: Single-player · Family Sharing · Simulation

My Summer Car
Shared: Single-player · Simulation · Family Sharing

Supermarket Simulator
Shared: Single-player · Simulation · Family Sharing

House Flipper
Shared: Single-player · Simulation · Family Sharing

Microsoft Flight Simulator (2020) 40th Anniversary Edition
Shared: Single-player · Simulation · Family Sharing

Farming Simulator 22
Shared: Single-player · Simulation · Family Sharing

Farming Simulator 19
Shared: Single-player · Simulation · Family Sharing

Papers, Please
Shared: Single-player · Simulation · Family Sharing

Prison Architect
Shared: Single-player · Simulation · Family Sharing

Planet Coaster
Shared: Single-player · Simulation · Family Sharing

Planet Zoo
Shared: Single-player · Family Sharing · Simulation

Cities: Skylines II
Shared: Single-player · Simulation · Family Sharing

People Playground
Shared: Single-player · Family Sharing · Simulation

Manor Lords
Shared: Single-player · Family Sharing · Simulation

Europa Universalis IV
Shared: Single-player · Family Sharing · Simulation

Car Mechanic Simulator 2018
Shared: Single-player · Simulation · Family Sharing

Hearts of Iron IV
Shared: Single-player · Family Sharing · Simulation

Space Engineers
Shared: Single-player · Family Sharing · Simulation

PC Building Simulator
Shared: Single-player · Simulation · Family Sharing

Farming Simulator 25
Shared: Single-player · Simulation · Family Sharing