Games like Alien Shepherd
Games like Alien Shepherd include Celeste, SANABI, Super Meat Boy, VVVVVV, and Shovel Knight: Treasure Trove. We matched them by the tags players give Alien Shepherd on Steam (Action, Adventure, Platformer, 2D Platformer, and Precision Platformer): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Precision Platformer · Platformer · Pixel Graphics

SANABI
Shared: Action · Adventure · Pixel Graphics

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

VVVVVV
Shared: Platformer · Precision Platformer · Pixel Graphics

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

Jump King
Shared: Precision Platformer · Adventure · Platformer

Katana ZERO
Shared: Action · Platformer · Pixel Graphics

Downwell
Shared: Precision Platformer · Platformer · Pixel Graphics

Sonic Origins
Shared: Action · Adventure · 2D Platformer

The Messenger
Shared: Platformer · Retro · Action

Pizza Tower
Shared: 2D Platformer · Platformer · Indie

Out There Somewhere
Shared: Platformer · Adventure · Pixel Graphics

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

Broforce
Shared: Action · Platformer · Pixel Graphics

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

Freedom Planet
Shared: Action · Platformer · 2D

Sonic Mania
Shared: Platformer · 2D · Adventure

The End Is Nigh
Shared: Platformer · Precision Platformer · Adventure

Gato Roboto
Shared: Action · Adventure · Indie

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

Gravity Circuit
Shared: Action · Platformer · 2D

Himno
Shared: Platformer · Adventure · 2D

Hollow Knight
Shared: Platformer · 2D · Adventure

Dead Cells
Shared: Adventure · 2D · Pixel Graphics