Games like Grandfather Simulator
Games like Grandfather Simulator include PowerWash Simulator, Prison Simulator, DrainSim, Crime Scene Cleaner, and Farming Simulator 25. We matched them by the tags players give Grandfather Simulator on Steam (Casual, RPG, Simulation, Walking Simulator, and 3D): closest matches first, and among equally close ones the better-known games.

PowerWash Simulator
Shared: Casual · Simulation · First-Person

Prison Simulator
Shared: Casual · RPG · Simulation

DrainSim
Shared: Casual · Simulation · First-Person

Crime Scene Cleaner
Shared: Simulation · First-Person · Relaxing

Farming Simulator 25
Shared: Simulation · 3D · Realistic

Goat Simulator
Shared: Simulation · Casual · Funny

PC Building Simulator
Shared: Simulation · First-Person · 3D

Kingdom Come: Deliverance II
Shared: RPG · First-Person · Realistic

Dale & Dawson Stationery Supplies
Shared: Casual · 3D · RPG

Fresh Start Cleaning Simulator
Shared: 3D · First-Person · Simulation

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

Gas Station Simulator
Shared: Simulation · Casual · First-Person

Stardew Valley
Shared: RPG · Simulation · Casual

Train Sim World® 2020
Shared: Simulation · Casual · Realistic

Tank Mechanic Simulator
Shared: Simulation · First-Person · Realistic

Mountain
Shared: Casual · Simulation · Relaxing

Placid Plastic Duck Simulator
Shared: Casual · 3D · Simulation

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

Kingdom Come: Deliverance
Shared: RPG · Realistic · First-Person

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

Garry's Mod
Shared: Casual · First-Person · Simulation

CityDriver
Shared: Casual · Simulation · First-Person

Emergency Call 112 – The Fire Fighting Simulation 2
Shared: Simulation · Realistic · First-Person

Prison Escape Simulator: Dig Out
Shared: Casual · Simulation · 3D