Games like Delivered by Friday
Games like Delivered by Friday include Celeste, Montaro, Turbo Pug, Gensokyo Night Festival, and Rabi-Ribi. We matched them by the tags players give Delivered by Friday on Steam (Side Scroller, Casual, Platformer, Female Protagonist, and 2D): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Platformer · Female Protagonist · Pixel Graphics

Montaro
Shared: Casual · Cute · Indie

Turbo Pug
Shared: Casual · Side Scroller · 2D

Gensokyo Night Festival
Shared: Casual · Indie · Female Protagonist

Rabi-Ribi
Shared: Female Protagonist · Side Scroller · Cute

Momodora: Reverie Under The Moonlight
Shared: Side Scroller · Female Protagonist · 2D

Skul: The Hero Slayer
Shared: Indie · 2D · Platformer

Hollow Knight: Silksong
Shared: 2D · Platformer · Indie

Muse Dash
Shared: Female Protagonist · Cute · Casual

Touhou Hero of Ice Fairy
Shared: Side Scroller · Female Protagonist · Platformer

Super Meat Boy
Shared: Platformer · 2D · Indie

Rogue Legacy
Shared: Platformer · Indie · 2D

FEZ
Shared: Platformer · Indie · Casual

Vampire Survivors
Shared: 2D · Casual · Pixel Graphics

Freedom Planet
Shared: Platformer · Female Protagonist · 2D

Broforce
Shared: 2D · Platformer · Pixel Graphics

Hollow Knight
Shared: Platformer · 2D · Indie

Shovel Knight: Treasure Trove
Shared: Platformer · 2D · Pixel Graphics

Unpacking
Shared: Casual · Cute · Pixel Graphics

Mark of the Ninja
Shared: Platformer · Side Scroller · 2D

Gato Roboto
Shared: Indie · 2D · Platformer

pureya
Shared: Casual · 2D · Side Scroller

Touhou Luna Nights
Shared: Side Scroller · Platformer · Female Protagonist

ICEY
Shared: Female Protagonist · Side Scroller · 2D