Games like Ruins
Games like Ruins include PUBG: BATTLEGROUNDS, Left 4 Dead 2, The Forest, Rust, and DayZ. We matched them by the tags players give Ruins on Steam (Action, Survival, Adventure, Local Co-Op, and Shooter): closest matches first, and among equally close ones the better-known games.

PUBG: BATTLEGROUNDS
Shared: Survival · Shooter · Action

Left 4 Dead 2
Shared: Action · Shooter · Survival

The Forest
Shared: Survival · Adventure · Action

Rust
Shared: Survival · Adventure · Action

DayZ
Shared: Survival · Shooter · Action

METRO Last Light Redux
Shared: Action · Post-apocalyptic · Shooter

Sons Of The Forest
Shared: Survival · Adventure · Horror

Metro Exodus
Shared: Action · Survival · Post-apocalyptic

METRO 2033 Redux
Shared: Action · Post-apocalyptic · Shooter

Dying Light
Shared: Survival · Action · Horror

Grand Theft Auto V Legacy
Shared: Action · Adventure · Shooter

The Long Drive
Shared: Survival · Adventure · Action

Bendy and the Dark Revival
Shared: Action · Adventure · First-Person

Outlast
Shared: Survival · First-Person · Horror

Ready or Not
Shared: Shooter · Action · First-Person

Resident Evil 6
Shared: Action · Adventure · Horror

We Happy Few
Shared: Adventure · Survival · Action

Apex Legends™
Shared: Action · Shooter · First-Person

Subnautica 2
Shared: Survival · Adventure · Horror

Far Cry 3
Shared: Action · Adventure · Shooter

The Beast Inside
Shared: Adventure · Action · First-Person

Far Cry® 4
Shared: Action · Adventure · Shooter

Left 4 Dead
Shared: Action · Survival · Shooter

Resident Evil 5
Shared: Action · Adventure · Local Co-Op