Games like A Hat in Time - Co-op
Games like A Hat in Time - Co-op include Pizza Tower, Hollow Knight, Don't Starve, PEAK, and Human Fall Flat. We matched them by the tags players give A Hat in Time - Co-op on Steam (Downloadable Content): closest matches first, and among equally close ones the better-known games.

Pizza Tower
Shared: Single-player · Shared/Split Screen Co-op · Full controller support

Hollow Knight
Shared: Single-player · Full controller support · Family Sharing

Don't Starve
Shared: Single-player · Full controller support · Adventure

PEAK
Shared: Single-player · Full controller support · Adventure

Human Fall Flat
Shared: Single-player · Shared/Split Screen Co-op · Full controller support

GRIS
Shared: Single-player · Full controller support · Indie

Firewatch
Shared: Single-player · Adventure · Full controller support

To the Moon
Shared: Single-player · Indie · Full controller support

Stray
Shared: Single-player · Adventure · Full controller support

Brothers - A Tale of Two Sons
Shared: Single-player · Adventure · Full controller support

Never Alone (Kisima Ingitchuna)
Shared: Single-player · Indie · Shared/Split Screen Co-op

The Binding of Isaac: Rebirth
Shared: Single-player · Indie · Full controller support

Little Nightmares
Shared: Single-player · Adventure · Full controller support

Slime Rancher
Shared: Single-player · Adventure · Full controller support

Wobbly Life
Shared: Single-player · Adventure · Shared/Split Screen Co-op

Stardew Valley
Shared: Single-player · Shared/Split Screen Co-op · Full controller support

Chicory: A Colorful Tale
Shared: Single-player · Indie · Shared/Split Screen Co-op

RV There Yet?
Shared: Single-player · Full controller support · Family Sharing

Dead Cells
Shared: Single-player · Adventure · Full controller support

Chained Together
Shared: Single-player · Shared/Split Screen Co-op · Adventure

OMORI
Shared: Single-player · Indie · Full controller support

The Stanley Parable
Shared: Single-player · Indie · Full controller support

ARK: Survival Evolved
Shared: Single-player · Full controller support · Family Sharing

Minecraft Dungeons
Shared: Single-player · Shared/Split Screen Co-op · Adventure