Games like Kill The Monster Z
Games like Kill The Monster Z include SANABI, Aeruta, ANNO: Mutationem, Stardew Valley, and Graveyard Keeper. We matched them by the tags players give Kill The Monster Z on Steam (RPG, Action-Adventure, 2D Platformer, Pixel Graphics, and Linear): closest matches first, and among equally close ones the better-known games.

SANABI
Shared: Pixel Graphics · 2D Platformer · Singleplayer

Aeruta
Shared: Pixel Graphics · Action-Adventure · RPG

ANNO: Mutationem
Shared: RPG · Pixel Graphics · Action-Adventure

Stardew Valley
Shared: Pixel Graphics · RPG · Indie

Graveyard Keeper
Shared: RPG · Pixel Graphics · Singleplayer

Undertale
Shared: RPG · Pixel Graphics · Singleplayer

Assassin's Creed® Odyssey
Shared: Action-Adventure · RPG · Singleplayer

To the Moon
Shared: Pixel Graphics · Indie · RPG

Celeste
Shared: Pixel Graphics · 2D Platformer · Indie

DELTARUNE
Shared: RPG · Pixel Graphics · Singleplayer

CrossCode
Shared: RPG · Pixel Graphics · Singleplayer

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

Tales of the Black Forest
Shared: RPG · Pixel Graphics · Indie

Trine 2: Complete Story
Shared: Action-Adventure · 2D Platformer · RPG

FINAL FANTASY VII REMAKE INTERGRADE
Shared: RPG · Action-Adventure · Singleplayer

Vampire Survivors
Shared: Pixel Graphics · Indie · Singleplayer

Trine Enchanted Edition
Shared: Action-Adventure · 2D Platformer · RPG

Wandering Sword
Shared: RPG · Pixel Graphics · Singleplayer

Black Myth: Wukong
Shared: RPG · Action-Adventure · Singleplayer

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

Secrets of Grindea
Shared: Singleplayer · RPG · Indie

Stoneshard
Shared: RPG · Pixel Graphics · Singleplayer

OneShot
Shared: Pixel Graphics · Indie · Singleplayer

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