Games like Longevity Party
Games like Longevity Party include PowerWash Simulator, House Flipper, PC Building Simulator, Chill with You : Lo-Fi Story, and Elite Dangerous. We matched them by the tags players give Longevity Party on Steam (Casual, 3D Platformer, Simulation, Software, and Space Sim): closest matches first, and among equally close ones the better-known games.

PowerWash Simulator
Shared: Casual · Simulation · 3D

House Flipper
Shared: Simulation · Casual · Immersive Sim

PC Building Simulator
Shared: Simulation · Immersive Sim · Casual

Chill with You : Lo-Fi Story
Shared: Casual · Utilities · Immersive Sim

Elite Dangerous
Shared: Space Sim · Simulation · Space

Electrician Simulator
Shared: Simulation · Immersive Sim · Casual

House Flipper 2
Shared: Casual · Simulation · Immersive Sim

PowerWash Simulator 2
Shared: Casual · Simulation · First-Person

DrainSim
Shared: Casual · Simulation · First-Person

Just Go
Shared: Casual · Simulation · 3D Platformer

Exo One
Shared: 3D Platformer · Space Sim · Space

Retro Rewind - Video Store Simulator
Shared: Simulation · Casual · Immersive Sim

SpaceEngine
Shared: Casual · Space Sim · 3D

Slime Rancher 2
Shared: Casual · Simulation · First-Person

Chained Together
Shared: Casual · 3D Platformer · Simulation

Refunct
Shared: 3D Platformer · Casual · First-Person

Universe Sandbox
Shared: Simulation · Space Sim · Space

KOTAMON: My Sis Found A Super-Rare Card In Her Cereal Box, So I Became A Garbage Man To Find The Entire Collection And Earn $1,000,000
Shared: Casual · Simulation · 3D

Streamer Life Simulator 2
Shared: Simulation · Casual · Immersive Sim

Internet Cafe Simulator 2
Shared: Simulation · 3D · First-Person

How to Make an Atomic Bomb in Your Garden
Shared: Simulation · Casual · Indie

Parcel Simulator
Shared: Simulation · Casual · Immersive Sim

Fresh Start Cleaning Simulator
Shared: Simulation · 3D · Casual

X-Plane 12
Shared: Simulation · Immersive Sim · 3D