Games like Power Washer Hero
Games like Power Washer Hero include Garry's Mod, Donut County, Liars Bar, Goat Simulator, and Slime Rancher 2. We matched them by the tags players give Power Washer Hero on Steam (Casual, Puzzle, Arcade, Open World, and FPS): closest matches first, and among equally close ones the better-known games.

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

Donut County
Shared: Casual · Puzzle · Indie

Liars Bar
Shared: Casual · FPS · 3D

Goat Simulator
Shared: Open World · Casual · Comedy

Slime Rancher 2
Shared: Open World · Casual · First-Person

Peggle Deluxe
Shared: Casual · Puzzle · Arcade

Human Fall Flat
Shared: Puzzle · Open World · Funny

Portal
Shared: Puzzle · First-Person · Comedy

The Coin Game
Shared: Arcade · Casual · Open World

Scribblenauts Unlimited
Shared: Casual · Puzzle · Open World

Big Walk
Shared: Puzzle · Open World · Casual

Tricky Towers
Shared: Puzzle · Casual · Arcade

Portal 2
Shared: Puzzle · First-Person · Singleplayer

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

Slime Rancher
Shared: Open World · First-Person · Casual

Zup! S
Shared: Casual · Puzzle · Indie

POSTAL 2
Shared: Open World · First-Person · Comedy

The Witness
Shared: Puzzle · Open World · First-Person

Little Inferno
Shared: Casual · Puzzle · Indie

There Is No Game: Wrong Dimension
Shared: Puzzle · Casual · Indie

Zuma Deluxe
Shared: Puzzle · Arcade · Casual

Zup!
Shared: Casual · Puzzle · Indie

Assemble with Care
Shared: Casual · Puzzle · Indie

Plants vs. Zombies GOTY Edition
Shared: Casual · Comedy · Puzzle