Games like Hoshi_no_Natchan
Games like Hoshi_no_Natchan include SANABI, Katana ZERO, Super Meat Boy, Shovel Knight: Treasure Trove, and Pizza Tower. We matched them by the tags players give Hoshi_no_Natchan on Steam (Action, Casual, 2D Platformer, Singleplayer, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

SANABI
Shared: Action · Pixel Graphics · 2D Platformer

Katana ZERO
Shared: Action · Pixel Graphics · 2D Platformer

Super Meat Boy
Shared: 2D Platformer · Platformer · Pixel Graphics

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

Pizza Tower
Shared: 2D Platformer · Pixel Graphics · Singleplayer

Sonic Origins
Shared: Action · 2D Platformer · Pixel Graphics

Celeste
Shared: Pixel Graphics · 2D Platformer · Singleplayer

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

The Messenger
Shared: Retro · Pixel Graphics · Platformer

Vampire Survivors
Shared: Pixel Graphics · Singleplayer · Casual

Gravity Circuit
Shared: Action · Pixel Graphics · Singleplayer

VVVVVV
Shared: Pixel Graphics · 2D Platformer · Platformer

Broforce
Shared: Action · Pixel Graphics · Platformer

Downwell
Shared: Pixel Graphics · Action · 2D Platformer

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

Timberman
Shared: Casual · Action · Pixel Graphics

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

Rogue Legacy
Shared: Action · Platformer · Singleplayer

UFO 50
Shared: Action · Pixel Graphics · Retro

Door Kickers: Action Squad
Shared: 2D Platformer · Action · Pixel Graphics

Brawlhalla
Shared: 2D Platformer · Casual · Action

8BitBoy™
Shared: Action · Casual · Platformer