Games like Quackdzilla: Pool Cleaning Simulator
Games like Quackdzilla: Pool Cleaning Simulator include The Sims™ 4, PC Building Simulator, Placid Plastic Duck Simulator, Electrician Simulator, and SuchArt: Creative Space. We matched them by the tags players give Quackdzilla: Pool Cleaning Simulator on Steam (Free to Play, Billiards, Relaxing, Immersive Sim, and 3D): closest matches first, and among equally close ones the better-known games.

The Sims™ 4
Shared: Free to Play · Life Sim · Relaxing

PC Building Simulator
Shared: Immersive Sim · Education · 3D

Placid Plastic Duck Simulator
Shared: Relaxing · Cute · 3D

Electrician Simulator
Shared: Immersive Sim · Education · First-Person

SuchArt: Creative Space
Shared: Free to Play · First-Person · Singleplayer

PowerWash Simulator
Shared: Relaxing · 3D · First-Person

Slime Rancher 2
Shared: Relaxing · Cute · First-Person

House Flipper
Shared: Relaxing · Immersive Sim · Singleplayer

SuchArt: Genius Artist Simulator
Shared: Immersive Sim · 3D · Relaxing

Low-Budget Repairs
Shared: Relaxing · Funny · Singleplayer

Chill with You : Lo-Fi Story
Shared: Relaxing · Immersive Sim · Cute

Fishing Planet
Shared: Free to Play · Relaxing · Simulation

Unpacking
Shared: Relaxing · Cute · Casual

Palia
Shared: Free to Play · Life Sim · Relaxing

House Flipper 2
Shared: Relaxing · Immersive Sim · Casual

Infinity Nikki
Shared: Relaxing · Cute · Free to Play

DrainSim
Shared: Relaxing · 3D · First-Person

Island Saver
Shared: Free to Play · Cute · First-Person

Supermarket Simulator
Shared: Immersive Sim · Life Sim · First-Person

House Builder
Shared: Relaxing · Immersive Sim · Education

Stardew Valley
Shared: Relaxing · Life Sim · Simulation

Animal Shelter
Shared: Education · Life Sim · Cute

VRChat
Shared: Free to Play · Funny · First-Person

Restore Your Island
Shared: Relaxing · Immersive Sim · Cute