Games like Territory
Games like Territory include Rust, Valheim, Once Human, ARK: Survival Ascended, and V Rising. We matched them by the tags players give Territory on Steam (Open World, Survival, Crafting, Base Building, and Sandbox): closest matches first, and among equally close ones the better-known games.

Rust
Shared: Survival · Crafting · Open World

Valheim
Shared: Survival · Open World · Crafting

Once Human
Shared: Open World · Survival · Crafting

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

V Rising
Shared: Open World · Survival · Base Building

The Forest
Shared: Survival · Open World · Crafting

ARK: Survival Evolved
Shared: Survival · Open World · Crafting

Deadside
Shared: Survival · Crafting · Open World

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

Enshrouded
Shared: Open World · Survival · Base Building

Terraria
Shared: Survival · Sandbox · Crafting

Scrap Mechanic
Shared: Survival · Open World · Sandbox

ICARUS
Shared: Survival · Base Building · Open World

Satisfactory
Shared: Open World · Base Building · Crafting

Raft
Shared: Survival · Open World · Crafting

Dune: Awakening
Shared: Survival · Base Building · Exploration

Core Keeper
Shared: Open World · Survival · Exploration

PUBG: BATTLEGROUNDS
Shared: Survival · Shooter · PvP

Subnautica
Shared: Survival · Open World · Crafting

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

Hurtworld
Shared: Survival · Open World · Crafting

Palworld
Shared: Open World · Survival · Crafting

No Man's Sky
Shared: Open World · Survival · Exploration

Grounded 2
Shared: Survival · Open World · Base Building