Games like Rotten Apple
Games like Rotten Apple include Left 4 Dead 2, DayZ, Dying Light, Left 4 Dead, and Killing Floor 2. We matched them by the tags players give Rotten Apple on Steam (Action, Online Co-Op, Zombies, Adventure, and Post-apocalyptic): closest matches first, and among equally close ones the better-known games.

Left 4 Dead 2
Shared: Zombies · Online Co-Op · Action

DayZ
Shared: Zombies · Online Co-Op · Post-apocalyptic

Dying Light
Shared: Zombies · Online Co-Op · Horror

Left 4 Dead
Shared: Zombies · Action · Online Co-Op

Killing Floor 2
Shared: Zombies · Online Co-Op · Post-apocalyptic

Resident Evil Requiem
Shared: Zombies · Action · Horror

Back 4 Blood
Shared: Online Co-Op · Zombies · Action

Arizona Sunshine® VR Legacy
Shared: Action · Zombies · VR

The Last of Us™ Part I
Shared: Zombies · Post-apocalyptic · Horror

PUBG: BATTLEGROUNDS
Shared: Action · Online Co-Op · Shooter

Resident Evil 6
Shared: Action · Zombies · Online Co-Op

Killing Floor
Shared: Zombies · Action · Online Co-Op

Resident Evil 5
Shared: Action · Zombies · Online Co-Op

Resident Evil 7 Biohazard
Shared: Horror · Zombies · VR

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

7 Days to Die
Shared: Zombies · Online Co-Op · Post-apocalyptic

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

Resident Evil 4
Shared: Action · Horror · Zombies

Days Gone
Shared: Zombies · Action · Post-apocalyptic

Metro Exodus
Shared: Post-apocalyptic · Action · Horror

Half-Life: Alyx
Shared: VR · Horror · Action

No More Room in Hell 2
Shared: Zombies · Online Co-Op · Action

Resident Evil Village
Shared: Action · Horror · Zombies

The Walking Dead: Saints & Sinners
Shared: Action · Zombies · VR