Games like Narita Boy
Games like Narita Boy include SANABI, Ori and the Will of the Wisps, Shovel Knight: Treasure Trove, Hollow Knight, and Katana ZERO. We matched them by the tags players give Narita Boy on Steam (Action, Retro, Adventure, Platformer, and 2D): closest matches first, and among equally close ones the better-known games.

SANABI
Shared: Action · Pixel Graphics · Adventure

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

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

Hollow Knight
Shared: Platformer · 2D · Adventure

Katana ZERO
Shared: Action · Pixel Graphics · Platformer

The Messenger
Shared: Retro · Platformer · Pixel Graphics

Sonic Origins
Shared: Action · Adventure · Retro

Celeste
Shared: Pixel Graphics · Platformer · 2D

ANIMAL WELL
Shared: Platformer · Pixel Graphics · Exploration

Sonic Mania
Shared: Retro · Platformer · 2D

Axiom Verge
Shared: Action · Platformer · Pixel Graphics

Rain World
Shared: Platformer · Pixel Graphics · Exploration

Broforce
Shared: Action · Pixel Graphics · 2D

VVVVVV
Shared: Platformer · Pixel Graphics · Retro

Owlboy
Shared: Adventure · Pixel Graphics · Platformer

Skul: The Hero Slayer
Shared: Action · Pixel Graphics · 2D

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

Gato Roboto
Shared: Action · Adventure · Pixel Graphics

UFO 50
Shared: Retro · Action · Pixel Graphics

Out There Somewhere
Shared: Platformer · Adventure · Pixel Graphics

Tomb Raider Game of the Year
Shared: Action · Adventure · Exploration

Dead Cells
Shared: Adventure · 2D · Pixel Graphics

Bloodstained: Curse of the Moon
Shared: Action · Retro · Platformer

BlazBlue Entropy Effect
Shared: Action · 2D · Platformer