Games like Little Hero Adventure
Games like Little Hero Adventure include Hollow Knight, Celeste, Hollow Knight: Silksong, SANABI, and Pizza Tower. We matched them by the tags players give Little Hero Adventure on Steam (Adventure, Platformer, 2D Platformer, 1990's, and Combat): closest matches first, and among equally close ones the better-known games.

Hollow Knight
Shared: Platformer · 2D · Adventure

Celeste
Shared: Platformer · 2D Platformer · Indie

Hollow Knight: Silksong
Shared: Platformer · Indie · Singleplayer

SANABI
Shared: Adventure · 2D Platformer · Singleplayer

Pizza Tower
Shared: 2D Platformer · Platformer · Indie

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

LIMBO
Shared: Platformer · Adventure · Indie

Neva
Shared: Adventure · Platformer · Indie

GRIS
Shared: Adventure · Platformer · Indie

BEEP
Shared: Platformer · Adventure · Indie

Blasphemous 2
Shared: Combat · Adventure · 2D Platformer

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

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

F.I.S.T.: Forged In Shadow Torch
Shared: Platformer · Adventure · 2D Platformer

Reventure
Shared: Adventure · Platformer · Indie

Shovel Knight: Treasure Trove
Shared: Platformer · Adventure · 2D

Rain World
Shared: Platformer · Indie · Adventure

CONVERGENCE: A League of Legends Story™
Shared: Adventure · 2D Platformer · Combat

Mark of the Ninja
Shared: Platformer · Adventure · 2D

Rogue Legacy 2
Shared: Platformer · Adventure · Indie

Thank Goodness You're Here!
Shared: Adventure · 2D Platformer · Platformer

VVVVVV
Shared: Platformer · 2D Platformer · Indie

Owlboy
Shared: Adventure · Platformer · Indie

Dead Cells
Shared: Adventure · 2D · Platformer