Games like Arthur Loves Watermelon
Games like Arthur Loves Watermelon include Celeste, Shovel Knight: Treasure Trove, SANABI, Chained Together, and Sonic Mania. We matched them by the tags players give Arthur Loves Watermelon on Steam (Adventure, Casual, Platformer, Action-Adventure, and Side Scroller): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Precision Platformer · Platformer · Pixel Graphics

Shovel Knight: Treasure Trove
Shared: Platformer · Adventure · Pixel Graphics

SANABI
Shared: Adventure · Pixel Graphics · Action-Adventure

Chained Together
Shared: Adventure · Platformer · Casual

Sonic Mania
Shared: Platformer · 2D · Adventure

Pikuniku
Shared: Adventure · Casual · Cute

Super Meat Boy
Shared: Platformer · Precision Platformer · 2D

Jump King
Shared: Adventure · Precision Platformer · Platformer

Klonoa Phantasy Reverie Series
Shared: Adventure · Side Scroller · Action-Adventure

Slime Rancher
Shared: Adventure · Cute · Casual

Broforce
Shared: Platformer · Pixel Graphics · 2D

Montaro
Shared: Casual · Cute · Platformer

Owlboy
Shared: Adventure · Platformer · Pixel Graphics

Nyan Cat: Lost In Space
Shared: Adventure · Platformer · Action-Adventure

Scribblenauts Unlimited
Shared: Casual · Adventure · 2D

FEZ
Shared: Platformer · Adventure · Casual

Thank Goodness You're Here!
Shared: Adventure · Casual · Platformer

Geometry Dash
Shared: Platformer · Precision Platformer · 2D

Rabi-Ribi
Shared: Action-Adventure · Cute · Pixel Graphics

Skul: The Hero Slayer
Shared: Platformer · Pixel Graphics · 2D

SUPER CHICKEN JUMPER
Shared: Action-Adventure · 2D · Cute

A Short Hike
Shared: Adventure · Casual · Cute

The Messenger
Shared: Platformer · Pixel Graphics · 2D

Kao the Kangaroo: Round 2 (2003 re-release)
Shared: Adventure · Casual · Platformer