Games like Karpov
Games like Karpov include The Test, OMORI, The Test: Hypothesis Rising, Firework, and Tiny Bunny. We matched them by the tags players give Karpov on Steam (RPG, Visual Novel, Simulation, Horror, and Multiple Endings): closest matches first, and among equally close ones the better-known games.

The Test
Shared: Simulation · Multiple Endings · Visual Novel

OMORI
Shared: RPG · Multiple Endings · Horror

The Test: Hypothesis Rising
Shared: Simulation · Visual Novel · Multiple Endings

Firework
Shared: Horror · Visual Novel · 2D

Tiny Bunny
Shared: Visual Novel · Horror · Singleplayer

Undertale
Shared: RPG · Multiple Endings · Singleplayer

No, I'm not a Human
Shared: Horror · Singleplayer · Multiple Endings

The Coffin of Andy and Leyley
Shared: Visual Novel · Multiple Endings · Singleplayer

Volcano Princess
Shared: RPG · Multiple Endings · Simulation

Tales of the Black Forest
Shared: RPG · Horror · Visual Novel

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

Lobotomy Corporation | Monster Management Simulation
Shared: Simulation · Horror · Singleplayer

The Witcher 3: Wild Hunt — Remastered
Shared: RPG · Singleplayer · Atmospheric

KinitoPET
Shared: Horror · Multiple Endings · Psychological Horror

Disco Elysium - The Final Cut
Shared: RPG · Singleplayer · Visual Novel

The Test: Final Revelation
Shared: Simulation · Visual Novel · Multiple Endings

Slay the Princess — The Pristine Cut
Shared: Visual Novel · Horror · Psychological Horror

Papers, Please
Shared: Simulation · Singleplayer · Multiple Endings

Milk outside a bag of milk outside a bag of milk
Shared: Visual Novel · Multiple Endings · Psychological Horror

Emily is Away <3
Shared: Simulation · Multiple Endings · Singleplayer

OneShot
Shared: Singleplayer · Atmospheric · Indie

MiSide
Shared: Horror · Singleplayer · Psychological Horror

Darkwood
Shared: Horror · RPG · Psychological Horror

SILENT HILL 2
Shared: Horror · Psychological Horror · Singleplayer