Games like Little Octopus
Games like Little Octopus include Twin Shot Deluxe, The WereCleaner, Muse Dash, Pizza Tower, and Tribal Hunter. We matched them by the tags players give Little Octopus on Steam (Casual, Arcade, Platformer, 2D Platformer, and 3D): closest matches first, and among equally close ones the better-known games.

Twin Shot Deluxe
Shared: Casual · Arcade · 2D Platformer

The WereCleaner
Shared: Casual · Arcade · Cartoony

Muse Dash
Shared: Anime · Casual · Cute

Pizza Tower
Shared: 2D Platformer · Platformer · Cartoony

Tribal Hunter
Shared: 2D Platformer · Casual · Platformer

Hatsune Miku: Project DIVA Mega Mix+
Shared: Arcade · Anime · 3D

pureya
Shared: Arcade · Casual · Platformer

DJMAX RESPECT V
Shared: Casual · Anime · Arcade

WEBFISHING
Shared: Casual · Cute · 3D

Mirror 2: Project X
Shared: 3D · Anime · Casual

Brawlhalla
Shared: Casual · 2D Platformer · Platformer

MUSYNX
Shared: Casual · Anime · Arcade

Banana
Shared: Casual · Arcade · Colorful

Montaro
Shared: Casual · Anime · Cute

Touhou Endless Dream
Shared: Casual · Anime · Cartoon

A Dance of Fire and Ice
Shared: Arcade · Casual · Indie

Bloons TD 6
Shared: Casual · 3D · Cartoony

Slime Rancher 2
Shared: Casual · Cute · Colorful

Bing in Wonderland
Shared: Casual · 2D Platformer · Cartoony

Oozi: Earth Adventure
Shared: Platformer · 2D Platformer · Casual

hololive Treasure Mountain
Shared: Casual · Arcade · Cute

Puyo Puyo™ Tetris® 2
Shared: Casual · Arcade · Anime

Shelldiver
Shared: Casual · Arcade · Colorful

Passpartout: The Starving Artist
Shared: Casual · Indie · Cartoon