Games like Zomcats Invasion
Games like Zomcats Invasion include Risk of Rain Returns, HELLDIVERS™ 2, Risk of Rain 2, Enter the Gungeon, and Vampire Survivors. We matched them by the tags players give Zomcats Invasion on Steam (Action Roguelike, PvE, Shooter, Online Co-Op, and Tabletop): closest matches first, and among equally close ones the better-known games.

Risk of Rain Returns
Shared: Action Roguelike · Online Co-Op · PvE

HELLDIVERS™ 2
Shared: PvE · Online Co-Op · Shooter

Risk of Rain 2
Shared: Action Roguelike · Roguelike · Online Co-Op

Enter the Gungeon
Shared: Action Roguelike · Roguelike · Pixel Graphics

Vampire Survivors
Shared: Action Roguelike · 2D · Pixel Graphics

Risk of Rain (2013)
Shared: Action Roguelike · Roguelike · Online Co-Op

The Binding of Isaac: Rebirth
Shared: Action Roguelike · Roguelike · Pixel Graphics

Skul: The Hero Slayer
Shared: Action Roguelike · Roguelike · 2D

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

Gunfire Reborn
Shared: Online Co-Op · Roguelike · Action Roguelike

Children of Morta
Shared: Action Roguelike · Online Co-Op · Roguelike

Nuclear Throne
Shared: Action Roguelike · Roguelike · Pixel Graphics

ARC Raiders
Shared: PvE · Shooter · Online Co-Op

Ravenswatch
Shared: Action Roguelike · Online Co-Op · Roguelike

SYNTHETIK: Legion Rising
Shared: Action Roguelike · Online Co-Op · Shooter

Dead Cells
Shared: Action Roguelike · Roguelike · 2D

Hero Siege
Shared: Action Roguelike · Pixel Graphics · Roguelike

Crab Champions
Shared: Action Roguelike · Roguelike · Shooter

Roboquest
Shared: Action Roguelike · Shooter · Online Co-Op

How to Fish
Shared: Online Co-Op · Shooter · PvE

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

Megabonk
Shared: Action Roguelike · Roguelike · Indie

Abyssus
Shared: Online Co-Op · PvE · Roguelike

Streets of Rogue
Shared: Action Roguelike · Roguelike · Pixel Graphics