Games like Son Of Killwa
Games like Son Of Killwa include Fallout 76, The Witcher 3: Wild Hunt — Remastered, Sons Of The Forest, Fallout 4, and The Forest. We matched them by the tags players give Son Of Killwa on Steam (RPG, Third Person, Horror, Base Building, and Open World): closest matches first, and among equally close ones the better-known games.

Fallout 76
Shared: RPG · Open World · Base Building

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

Sons Of The Forest
Shared: Open World · Survival · Base Building

Fallout 4
Shared: RPG · Open World · Atmospheric

The Forest
Shared: Horror · Open World · Survival

Middle-earth: Shadow of War
Shared: RPG · Open World · Third Person

7 Days to Die
Shared: Open World · Survival · Base Building

Subnautica
Shared: Horror · Open World · Survival

Enshrouded
Shared: Open World · Base Building · RPG

Valheim
Shared: Open World · Survival · Base Building

S.T.A.L.K.E.R. 2: Heart of Chornobyl - Standard Edition
Shared: Open World · RPG · Atmospheric

S.T.A.L.K.E.R.: Shadow of Chernobyl
Shared: Atmospheric · Open World · RPG

Metro Exodus
Shared: Open World · Horror · Atmospheric

State of Decay: YOSE
Shared: Base Building · Open World · Survival

Hogwarts Legacy
Shared: Open World · RPG · Third Person

Fallout: New Vegas
Shared: RPG · Open World · Singleplayer

Scrap Mechanic
Shared: Building · Open World · Survival

SurrounDead
Shared: Open World · Survival · Base Building

ELDEN RING
Shared: RPG · Open World · Third Person

Vampyr
Shared: RPG · Open World · Third Person

ELEX
Shared: RPG · Open World · Third Person

ARK: Survival Evolved
Shared: Open World · Survival · Base Building

The Elder Scrolls IV: Oblivion Remastered
Shared: RPG · Open World · Third Person

This War of Mine
Shared: Atmospheric · Survival · War