Games like Jack & the cat
Games like Jack & the cat include Cuphead, Shovel Knight: Treasure Trove, Pizza Tower, Hollow Knight, and Broforce. We matched them by the tags players give Jack & the cat on Steam (Action, Indie, Casual, Platformer, and Retro): closest matches first, and among equally close ones the better-known games.

Cuphead
Shared: Platformer · Co-op · Indie

Shovel Knight: Treasure Trove
Shared: Platformer · Indie · Action

Pizza Tower
Shared: Indie · Great Soundtrack · Platformer

Hollow Knight
Shared: Platformer · Indie · Great Soundtrack

Broforce
Shared: Action · Co-op · Platformer

Katana ZERO
Shared: Action · Platformer · Great Soundtrack

Hotline Miami
Shared: Action · Indie · Great Soundtrack

Sonic Mania
Shared: Platformer · Great Soundtrack · Retro

Hollow Knight: Silksong
Shared: Indie · Great Soundtrack · Platformer

Ori and the Will of the Wisps
Shared: Platformer · Action · Great Soundtrack

Risk of Rain (2013)
Shared: Indie · Action · Platformer

Pikuniku
Shared: Indie · Casual · Action

Gang Beasts
Shared: Action · Co-op · Casual

Defy Gravity Extended
Shared: Indie · Platformer · Action

The Messenger
Shared: Platformer · Retro · Indie

Dust: An Elysian Tail
Shared: Action · Indie · Platformer

Super Meat Boy
Shared: Indie · Platformer · Great Soundtrack

Retrowave
Shared: Indie · Casual · Action

Mighty No. 9
Shared: Action · Platformer · Indie

My Friend Pedro
Shared: Action · Indie · Great Soundtrack

Freedom Planet
Shared: Action · Platformer · Indie

Celeste
Shared: Indie · Platformer · Great Soundtrack

Super Fancy Pants Adventure
Shared: Action · Indie · Platformer

Sonic Adventure 2
Shared: Action · Great Soundtrack · Platformer