Games like Luna Sky
Games like Luna Sky include Hollow Knight: Silksong, Hollow Knight, Ori and the Will of the Wisps, Tomb Raider Game of the Year, and GRIS. We matched them by the tags players give Luna Sky on Steam (Indie, Adventure, Action, Singleplayer, and Female Protagonist): closest matches first, and among equally close ones the better-known games.

Hollow Knight: Silksong
Shared: Indie · Metroidvania · Singleplayer

Hollow Knight
Shared: Indie · Platformer · Metroidvania

Ori and the Will of the Wisps
Shared: Singleplayer · Action · Adventure

Tomb Raider Game of the Year
Shared: Adventure · Action · Female Protagonist

GRIS
Shared: Indie · Adventure · Atmospheric

Rise of the Tomb Raider™
Shared: Adventure · Action · Singleplayer

Dust: An Elysian Tail
Shared: Action · Indie · Adventure

Planet of Lana
Shared: Action · Female Protagonist · Atmospheric

ICEY
Shared: Action · Female Protagonist · Adventure

Bloodstained: Ritual of the Night
Shared: Action · Adventure · Female Protagonist

Hellblade: Senua's Sacrifice
Shared: Atmospheric · Female Protagonist · Singleplayer

SteamWorld Dig 2
Shared: Adventure · Indie · Action

Iconoclasts
Shared: Indie · Action · Adventure

Seen
Shared: Indie · Adventure · Singleplayer

Rogue Legacy 2
Shared: Indie · Action · Adventure

Skul: The Hero Slayer
Shared: Indie · Action · Singleplayer

Nine Sols
Shared: Action · Metroidvania · Indie

Deadlight
Shared: Indie · Action · Adventure

Celeste
Shared: Indie · Platformer · Female Protagonist

Little Nightmares
Shared: Adventure · Singleplayer · Atmospheric

Neva
Shared: Adventure · Indie · Atmospheric

Constance
Shared: Action · Indie · Platformer

The Vagrant
Shared: Action · Female Protagonist · Adventure

Ghost 1.0
Shared: Indie · Action · Adventure