Games like Citadel Stormer 2
Games like Citadel Stormer 2 include SANABI, Shovel Knight: Treasure Trove, Celeste, Katana ZERO, and Skul: The Hero Slayer. We matched them by the tags players give Citadel Stormer 2 on Steam (Platformer, Indie, Pixel Graphics, Action, and Retro): closest matches first, and among equally close ones the better-known games.

SANABI
Shared: Pixel Graphics · Action · Indie

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

Celeste
Shared: Pixel Graphics · Indie · Platformer

Katana ZERO
Shared: Pixel Graphics · Action · Platformer

Skul: The Hero Slayer
Shared: Indie · Action · Pixel Graphics

Broforce
Shared: Pixel Graphics · Action · Platformer

Gravity Circuit
Shared: Platformer · Indie · Action

Super Meat Boy
Shared: Platformer · Indie · Pixel Graphics

The Messenger
Shared: Platformer · Retro · Pixel Graphics

Gato Roboto
Shared: Indie · Pixel Graphics · Action

Axiom Verge
Shared: Indie · Platformer · Pixel Graphics

Out There Somewhere
Shared: Platformer · Indie · Pixel Graphics

Pizza Tower
Shared: Indie · Platformer · Pixel Graphics

VVVVVV
Shared: Platformer · Pixel Graphics · Indie

Bloodstained: Curse of the Moon
Shared: Pixel Graphics · Platformer · Action

NINJA GAIDEN: Ragebound
Shared: Platformer · Action · Pixel Graphics

Sonic Mania
Shared: Platformer · 2D · Retro

MO:Astray
Shared: Indie · Action · Pixel Graphics

Hollow Knight
Shared: Platformer · Indie · 2D

Rogue Legacy
Shared: Platformer · Indie · Action

Freedom Planet
Shared: Platformer · Action · Indie

Volgarr the Viking
Shared: Platformer · Indie · Action

Angry Video Game Nerd Adventures
Shared: Platformer · Indie · Action

Jump King
Shared: Indie · Pixel Graphics · Platformer