Games like Knockless
Games like Knockless include Lethal Company, R.E.P.O., Dead by Daylight, Escape the Backrooms, and Dying Light. We matched them by the tags players give Knockless on Steam (Action, Online Co-Op, First-Person, Horror, and Survival Horror): closest matches first, and among equally close ones the better-known games.

Lethal Company
Shared: Online Co-Op · First-Person · Horror

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

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

Escape the Backrooms
Shared: Online Co-Op · Horror · First-Person

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

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

Secret Neighbor: Hello Neighbor Multiplayer
Shared: Online Co-Op · Horror · First-Person

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

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

Nuclear Nightmare
Shared: Online Co-Op · Horror · Survival Horror

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

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

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

Blood and Bacon
Shared: Action · Horror · Online Co-Op

Phasmophobia
Shared: Online Co-Op · Horror · First-Person

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

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

The Outlast Trials
Shared: Horror · Survival Horror · First-Person

Who's Your Daddy?!
Shared: First-Person · Online Co-Op · Comedy

Zort
Shared: Online Co-Op · Horror · First-Person

GTFO
Shared: Online Co-Op · Horror · Action

Escape from Playtime
Shared: Online Co-Op · Horror · Action

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

Bendy and the Ink Machine
Shared: First-Person · Horror · Cartoony