Games like October Panic
Games like October Panic include Broforce, SANABI, Shovel Knight: Treasure Trove, Katana ZERO, and Celeste. We matched them by the tags players give October Panic on Steam (Action, Arcade, Platformer, 2D Platformer, and Side Scroller): closest matches first, and among equally close ones the better-known games.

Broforce
Shared: Action · Platformer · 2D

SANABI
Shared: Action · 2D Platformer · Pixel Graphics

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

Katana ZERO
Shared: Action · Platformer · Pixel Graphics

Celeste
Shared: Platformer · 2D Platformer · Pixel Graphics

Pizza Tower
Shared: 2D Platformer · Platformer · Action

Webbed
Shared: 2D Platformer · Cute · Platformer

Sonic Origins
Shared: Action · 2D Platformer · Platformer

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

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

Rogue Legacy 2
Shared: Arcade · Action · Platformer

pureya
Shared: Arcade · 2D · Action

The Messenger
Shared: Platformer · Action · 2D

Momodora: Reverie Under The Moonlight
Shared: 2D Platformer · Side Scroller · Pixel Graphics

Sonic Mania
Shared: Platformer · 2D · Action

SHINOBI: Art of Vengeance
Shared: Action · Platformer · 2D Platformer

Gravity Circuit
Shared: Action · Platformer · 2D

NINJA GAIDEN: Ragebound
Shared: Action · Platformer · 2D Platformer

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

Downwell
Shared: Platformer · Arcade · Action

Bloodstained: Curse of the Moon
Shared: Action · Platformer · 2D

METAL SLUG
Shared: Action · Arcade · Side Scroller

Smilemo
Shared: Action · Platformer · 2D Platformer

Huntdown
Shared: Action · Side Scroller · Pixel Graphics