Games like Horatio: Connector 13 (Chapters 1-12)
Games like Horatio: Connector 13 (Chapters 1-12) include Totally Accurate Battle Simulator, 鬼谷八荒 Tale of Immortal, Drug Dealer Simulator, Thief Simulator, and ICEY. We matched them by the tags players give Horatio: Connector 13 (Chapters 1-12) on Steam (Simulation, Adventure, Action, Visual Novel, and Indie): closest matches first, and among equally close ones the better-known games.

Totally Accurate Battle Simulator
Shared: Simulation · Singleplayer · Adventure

鬼谷八荒 Tale of Immortal
Shared: Simulation · Singleplayer · Action

Drug Dealer Simulator
Shared: Simulation · Action · Indie

Thief Simulator
Shared: Simulation · Singleplayer · Adventure

ICEY
Shared: Action · Adventure · Anime

Miracle Snack Shop
Shared: Visual Novel · Simulation · Indie

NARUTO SHIPPUDEN: Ultimate Ninja STORM 4
Shared: Action · Adventure · Anime

Crimson Desert Enhanced
Shared: Action · Adventure · Singleplayer

God of War
Shared: Action · Adventure · Singleplayer

Slime Rancher
Shared: Adventure · Singleplayer · Simulation

Long Live The Queen
Shared: Visual Novel · Simulation · Indie

Tricolour Lovestory
Shared: Visual Novel · Simulation · Anime

Dust: An Elysian Tail
Shared: Action · Adventure · Indie

Feed and Grow: Fish
Shared: Simulation · Action · Adventure

Middle-earth: Shadow of War
Shared: Action · Adventure · Singleplayer

Middle-earth™: Shadow of Mordor™
Shared: Action · Adventure · Fantasy

DRAGON BALL Z: KAKAROT
Shared: Action · Anime · Adventure

KovaaK's
Shared: Simulation · Action · Indie

Thief Simulator 2
Shared: Simulation · Action · Singleplayer

Deliver Us The Moon
Shared: Adventure · Action · Indie

House Flipper
Shared: Simulation · Singleplayer · Adventure

Bum Simulator
Shared: Simulation · Adventure · Action

Internet Cafe Simulator
Shared: Simulation · Indie · Adventure

Bastion
Shared: Action · Indie · Singleplayer