Games like Grinner's Diner
Games like Grinner's Diner include Lethal Company, Phasmophobia, R.E.P.O., Escape the Backrooms, and Gunfire Reborn. We matched them by the tags players give Grinner's Diner on Steam (Online Co-Op, Horror, Cooking, Job Simulator, and Roguelite): closest matches first, and among equally close ones the better-known games.

Lethal Company
Shared: Online Co-Op · Horror · Co-op

Phasmophobia
Shared: Online Co-Op · Horror · Co-op

R.E.P.O.
Shared: Online Co-Op · Horror · Co-op

Escape the Backrooms
Shared: Horror · Online Co-Op · Co-op

Gunfire Reborn
Shared: Online Co-Op · Co-op · Roguelite

KLETKA
Shared: Co-op · Horror · Online Co-Op

Zort
Shared: Online Co-Op · Co-op · Horror

PEAK
Shared: Online Co-Op · Co-op · First-Person

Dead by Daylight
Shared: Horror · Online Co-Op · Co-op

Content Warning
Shared: Online Co-Op · Horror · Co-op

Left 4 Dead 2
Shared: Co-op · Online Co-Op · Horror

Fast Food Simulator
Shared: Online Co-Op · Cooking · Co-op

How to Fish
Shared: Online Co-Op · Co-op · First-Person

Backrooms: Escape Together
Shared: Online Co-Op · Horror · Co-op

PlateUp!
Shared: Co-op · Cooking · Roguelite

Pacify
Shared: Online Co-Op · Horror · Co-op

ELDEN RING NIGHTREIGN
Shared: Online Co-Op · Co-op · Roguelike

Demonologist
Shared: Horror · Online Co-Op · Co-op

Deadzone: Rogue
Shared: Online Co-Op · Roguelike · Roguelite

The Headliners
Shared: Online Co-Op · Co-op · Horror

Risk of Rain 2
Shared: Co-op · Roguelite · Online Co-Op

RV There Yet?
Shared: Co-op · Online Co-Op · Funny

Overcooked! 2
Shared: Online Co-Op · Co-op · Cooking

DEVOUR
Shared: Online Co-Op · Horror · Co-op