Games like Flappy Octane
Games like Flappy Octane include Banana, Celeste, Super Meat Boy, Downwell, and Brawlhalla. We matched them by the tags players give Flappy Octane on Steam (Casual, Arcade, Platformer, 2D Platformer, and Precision Platformer): closest matches first, and among equally close ones the better-known games.

Banana
Shared: Casual · Free to Play · 2D

Celeste
Shared: Precision Platformer · Platformer · 2D Platformer

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

Downwell
Shared: Precision Platformer · Platformer · Arcade

Brawlhalla
Shared: Casual · 2D Platformer · Free to Play

Geometry Dash
Shared: 2D · Precision Platformer · Platformer

Himno
Shared: Platformer · 2D · Free to Play

Rogue Legacy 2
Shared: Arcade · Platformer · Indie

Neon Beats
Shared: Free to Play · Platformer · 2D

To The Core
Shared: Casual · Arcade · 2D

VVVVVV
Shared: Platformer · Precision Platformer · 2D Platformer

Thomas Was Alone
Shared: Platformer · 2D Platformer · Precision Platformer

pureya
Shared: Arcade · Casual · 2D

Spelunky
Shared: Platformer · 2D · Arcade

Braid
Shared: 2D Platformer · Platformer · 2D

Vampire Survivors
Shared: 2D · Casual · Arcade

Pizza Tower
Shared: 2D Platformer · Platformer · Indie

Hollow Knight
Shared: Platformer · 2D · Indie

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

Timberman
Shared: Casual · Arcade · 2D

Beyond Gravity
Shared: Casual · Platformer · 2D

A Dance of Fire and Ice
Shared: Arcade · 2D · Casual

Bongo Cat
Shared: Casual · Free to Play · 2D

BEEP
Shared: Platformer · 2D · Indie