Games like Callparin 2
Games like Callparin 2 include Submerged, Rise of the Tomb Raider™, AER Memories of Old, ABZU, and A Short Hike. We matched them by the tags players give Callparin 2 on Steam (Open World, Exploration, Walking Simulator, Female Protagonist, and Relaxing): closest matches first, and among equally close ones the better-known games.

Submerged
Shared: Exploration · Walking Simulator · Female Protagonist

Rise of the Tomb Raider™
Shared: Female Protagonist · Open World · Exploration

AER Memories of Old
Shared: Exploration · Open World · Relaxing

ABZU
Shared: Exploration · Relaxing · Underwater

A Short Hike
Shared: Exploration · Relaxing · Open World

DEATH STRANDING DIRECTOR'S CUT
Shared: Open World · Walking Simulator · Exploration

Euro Truck Simulator 2
Shared: Open World · Exploration · Relaxing

Slime Rancher
Shared: Exploration · Open World · Colorful

DEATH STRANDING 2: ON THE BEACH
Shared: Open World · Exploration · Walking Simulator

The Witness
Shared: Exploration · Open World · Walking Simulator

Slime Rancher 2
Shared: Open World · Relaxing · Colorful

American Truck Simulator
Shared: Open World · Exploration · Relaxing

Firewatch
Shared: Walking Simulator · Exploration · Open World

The First Tree
Shared: Walking Simulator · Exploration · Open World

Grand Theft Auto V Legacy
Shared: Open World · Third Person · Action

Jalopy
Shared: Open World · Exploration · Relaxing

The Long Dark
Shared: Open World · Exploration · Walking Simulator

Maneater
Shared: Open World · Exploration · Underwater

Tomb Raider Game of the Year
Shared: Female Protagonist · Third Person · Exploration

Crimson Desert Enhanced
Shared: Open World · Exploration · Action

EVE Online
Shared: Exploration · Open World · Adventure

Submerged: Hidden Depths
Shared: Exploration · Walking Simulator · Relaxing

Forza Horizon 5
Shared: Open World · Exploration · Racing

Assassin's Creed® Odyssey
Shared: Open World · Exploration · Third Person