Games like Pixel Artist
Games like Pixel Artist include Unpacking, Sticky Business, Slime Rancher 2, Passpartout: The Starving Artist, and Coloring Game. We matched them by the tags players give Pixel Artist on Steam (Design & Illustration, Casual, Relaxing, Colorful, and Stylized): closest matches first, and among equally close ones the better-known games.

Unpacking
Shared: Relaxing · Casual · Cute

Sticky Business
Shared: Casual · Relaxing · Cute

Slime Rancher 2
Shared: Relaxing · Cute · Colorful

Passpartout: The Starving Artist
Shared: Casual · Relaxing · Design & Illustration

Coloring Game
Shared: Relaxing · Casual · Pixel Graphics

My Dream Setup
Shared: Design & Illustration · Relaxing · Casual

Dressmaker
Shared: Design & Illustration · Relaxing · Casual

Is This Seat Taken?
Shared: Casual · Relaxing · Puzzle

A Little to the Left
Shared: Relaxing · Casual · Puzzle

Tiny Glade
Shared: Design & Illustration · Relaxing · Casual

LEGO® Builder's Journey
Shared: Relaxing · Casual · Cute

Carto
Shared: Relaxing · Cute · Puzzle

SUMMERHOUSE
Shared: Relaxing · Casual · Colorful

Stardew Valley
Shared: Pixel Graphics · Relaxing · Simulation

Assemble with Care
Shared: Casual · Relaxing · Puzzle

House Flipper
Shared: Design & Illustration · Relaxing · Casual

Minami Lane
Shared: Casual · Relaxing · Cute

Ballads of Hongye: REBORN
Shared: Casual · Relaxing · Design & Illustration

DAVE THE DIVER
Shared: Casual · Pixel Graphics · Relaxing

Townscaper
Shared: Relaxing · Casual · Stylized

Zup! S
Shared: Casual · Relaxing · Puzzle

OneShot
Shared: Pixel Graphics · Cute · Indie

Hidden Folks
Shared: Casual · Relaxing · Puzzle

Papers, Please
Shared: Pixel Graphics · Simulation · Indie