Games like 夜中作戦
Games like 夜中作戦 include Celeste, Eastward, Tales of the Black Forest, OneShot, and Rain World. We matched them by the tags players give 夜中作戦 on Steam (RPG, Tactical RPG, Difficult, Pixel Graphics, and Cute): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Difficult · Pixel Graphics · 2D Platformer

Eastward
Shared: Pixel Graphics · RPG · Atmospheric

Tales of the Black Forest
Shared: RPG · Pixel Graphics · Female Protagonist

OneShot
Shared: Pixel Graphics · Cute · Atmospheric

Rain World
Shared: Difficult · Pixel Graphics · Atmospheric

Undertale
Shared: RPG · Pixel Graphics · Story Rich

Symphony of War: The Nephilim Saga
Shared: RPG · Tactical RPG · Pixel Graphics

Hyperdimension Neptunia Re;Birth1
Shared: RPG · Cute · JRPG

SANABI
Shared: Pixel Graphics · 2D Platformer · Difficult

Finding Paradise
Shared: Pixel Graphics · RPG · Story Rich

CrossCode
Shared: RPG · Pixel Graphics · Female Protagonist

Momodora: Reverie Under The Moonlight
Shared: Pixel Graphics · 2D Platformer · Difficult

Changed
Shared: Difficult · Cute · Pixel Graphics

LiEat
Shared: RPG · Pixel Graphics · Indie

DELTARUNE
Shared: RPG · Pixel Graphics · Story Rich

NieR:Automata™
Shared: RPG · Female Protagonist · JRPG

WitchSpring R
Shared: RPG · Cute · JRPG

The Binding of Isaac: Rebirth
Shared: Difficult · Pixel Graphics · Indie

Tales of Berseria™
Shared: RPG · JRPG · Female Protagonist

Hyper Light Drifter
Shared: Pixel Graphics · Difficult · RPG

ANNO: Mutationem
Shared: RPG · Pixel Graphics · Female Protagonist

ENDER LILIES: Quietus of the Knights
Shared: Female Protagonist · Difficult · RPG

Hollow Knight: Silksong
Shared: Difficult · Indie · Female Protagonist

OMORI
Shared: RPG · Pixel Graphics · Indie