Games like Monstronomy
Games like Monstronomy include Look Outside, Digimon Story Time Stranger, Cassette Beasts, Monster Sanctuary, and DRAGON QUEST III HD-2D Remake. We matched them by the tags players give Monstronomy on Steam (Creature Collector, RPG, Horror, Pixel Graphics, and Cute): closest matches first, and among equally close ones the better-known games.

Look Outside
Shared: RPG · Pixel Graphics · Horror

Digimon Story Time Stranger
Shared: RPG · Creature Collector · Cute

Cassette Beasts
Shared: Creature Collector · Turn-Based Combat · RPG

Monster Sanctuary
Shared: Creature Collector · Pixel Graphics · Turn-Based Combat

DRAGON QUEST III HD-2D Remake
Shared: RPG · Pixel Graphics · Turn-Based Combat

OCTOPATH TRAVELER II
Shared: RPG · Pixel Graphics · Party-Based RPG

FINAL FANTASY
Shared: RPG · Pixel Graphics · Turn-Based Combat

Digimon Story Cyber Sleuth: Complete Edition
Shared: Creature Collector · RPG · Turn-Based Combat

CARRION
Shared: Pixel Graphics · Horror · Gore

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

WORLD OF FINAL FANTASY®
Shared: RPG · Creature Collector · Turn-Based Combat

MiSide
Shared: Cute · Horror · Thriller

Undertale
Shared: Pixel Graphics · RPG · Singleplayer

Clair Obscur: Expedition 33
Shared: RPG · Turn-Based Combat · Singleplayer

Darkest Dungeon®
Shared: RPG · Turn-Based Combat · Singleplayer

Ruined King: A League of Legends Story™
Shared: RPG · Turn-Based Combat · Singleplayer

Outlast 2
Shared: Horror · Dark · Gore

OCTOPATH TRAVELER™
Shared: RPG · Pixel Graphics · Turn-Based Combat

The Witch's House MV
Shared: Horror · Pixel Graphics · RPG

Digimon World: Next Order
Shared: Creature Collector · RPG · Party-Based RPG

DRAGON QUEST MONSTERS: The Dark Prince
Shared: Creature Collector · RPG · Turn-Based Combat

Yarimono
Shared: Creature Collector · RPG · Turn-Based Combat

Coromon
Shared: Creature Collector · Turn-Based Combat · Pixel Graphics

Nexomon: Extinction
Shared: Creature Collector · RPG · Turn-Based Combat