Games like Aaru's Awakening
Games like Aaru's Awakening include Hollow Knight, Hollow Knight: Silksong, Nine Sols, LIMBO, and Celeste. We matched them by the tags players give Aaru's Awakening on Steam (Indie, Adventure, Action, Platformer, and Puzzle Platformer): closest matches first, and among equally close ones the better-known games.

Hollow Knight
Shared: Platformer · Indie · Difficult

Hollow Knight: Silksong
Shared: Indie · Difficult · Platformer

Nine Sols
Shared: Platformer · Action · Difficult

LIMBO
Shared: Indie · Puzzle Platformer · Platformer

Celeste
Shared: Indie · Difficult · Platformer

MO:Astray
Shared: Indie · Adventure · Action

Cuphead
Shared: Difficult · Platformer · Indie

Rogue Legacy 2
Shared: Indie · Action · Platformer

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

GRIS
Shared: Indie · Adventure · Platformer

Jump King
Shared: Indie · Adventure · Difficult

Out There Somewhere
Shared: Indie · Platformer · Adventure

Shovel Knight: Treasure Trove
Shared: Platformer · Indie · Adventure

BADLAND: Game of the Year Edition
Shared: Indie · Adventure · Action

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

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

Defy Gravity Extended
Shared: Indie · Platformer · Puzzle Platformer

Planet of Lana
Shared: Action · Puzzle Platformer · Adventure

Seen
Shared: Indie · Adventure · Platformer

SANABI
Shared: Action · Adventure · Indie

Wonder Boy: The Dragon's Trap
Shared: Adventure · Platformer · Action

Nihilumbra
Shared: Indie · Adventure · Platformer

Angvik
Shared: Indie · Action · Platformer

BEEP
Shared: Indie · Adventure · Platformer