Games like Junk Survivor
Games like Junk Survivor include Project Zomboid, Days Gone, The Forest, 7 Days to Die, and Rust. We matched them by the tags players give Junk Survivor on Steam (Action, Survival, Post-apocalyptic, Zombies, and Open World): closest matches first, and among equally close ones the better-known games.

Project Zomboid
Shared: Survival · Zombies · Open World

Days Gone
Shared: Survival · Zombies · Open World

The Forest
Shared: Survival · Open World · Action

7 Days to Die
Shared: Survival · Zombies · Open World

Rust
Shared: Survival · Open World · Action

ARK: Survival Ascended
Shared: Survival · Open World · Action

DayZ
Shared: Survival · Zombies · Open World

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

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

Mist Survival
Shared: Survival · Zombies · Open World

The Long Dark
Shared: Survival · Open World · Singleplayer

State of Decay: YOSE
Shared: Survival · Zombies · Post-apocalyptic

SurrounDead
Shared: Survival · Zombies · Post-apocalyptic

Once Human
Shared: Survival · Action · Open World

Terraria
Shared: Survival · Sandbox · Adventure

Kenshi
Shared: Survival · Open World · Post-apocalyptic

Green Hell
Shared: Survival · Action · Open World

Fallout 4
Shared: Post-apocalyptic · Open World · Singleplayer

Scrap Mechanic
Shared: Survival · Open World · Sandbox

Raft
Shared: Survival · Open World · Adventure

Valheim
Shared: Survival · Open World · Building

Miscreated
Shared: Survival · Open World · Zombies

SCUM
Shared: Survival · Open World · Zombies

Rise of the Tomb Raider™
Shared: Action · Adventure · Open World