Games like Cats on Duty
Games like Cats on Duty include Human Fall Flat, Plants vs. Zombies GOTY Edition, Pikuniku, Orcs Must Die! 2, and Bloons TD 5. We matched them by the tags players give Cats on Duty on Steam (Action, Adventure, Voxel, Tower Defense, and Indie): closest matches first, and among equally close ones the better-known games.

Human Fall Flat
Shared: Adventure · Co-op · Action

Plants vs. Zombies GOTY Edition
Shared: Tower Defense · Strategy · Zombies

Pikuniku
Shared: Adventure · Indie · Action

Orcs Must Die! 2
Shared: Action · Tower Defense · Co-op

Bloons TD 5
Shared: Tower Defense · Action · Co-op

Gang Beasts
Shared: Action · Co-op · Indie

Orcs Must Die! 3
Shared: Tower Defense · Action · Co-op

Bloons TD 6
Shared: Tower Defense · Strategy · Co-op

Kingdom Rush - Tower Defense
Shared: Tower Defense · Action · Strategy

Rock 'N' Roll Defense
Shared: Action · Tower Defense · Adventure

Cat Quest
Shared: Adventure · Action · Cats

Stray
Shared: Adventure · Cats · Puzzle

Wobbly Life
Shared: Adventure · Action · Co-op

Broforce
Shared: Action · Co-op · Indie

There Is No Game: Wrong Dimension
Shared: Adventure · Indie · Puzzle

UFO 50
Shared: Action · Indie · Adventure

The Escapists
Shared: Action · Strategy · Indie

Sanctum 2
Shared: Tower Defense · Action · Co-op

7 Days to Die
Shared: Voxel · Zombies · Adventure

Orcs Must Die!
Shared: Action · Tower Defense · Indie

Clone Drone in the Danger Zone
Shared: Action · Voxel · Indie

LEGO® Star Wars™ III - The Clone Wars™
Shared: Action · Adventure · Co-op

CATO: Buttered Cat
Shared: Adventure · Cats · Indie

Polarity
Shared: Adventure · Indie · Action