Games like Kungfu Cowboy
Games like Kungfu Cowboy include Enter the Gungeon, Vampire Survivors, Spelunky 2, Risk of Rain 2, and Nuclear Throne. We matched them by the tags players give Kungfu Cowboy on Steam (Action Roguelike, 2D Platformer, Bullet Hell, Difficult, and Twin Stick Shooter): closest matches first, and among equally close ones the better-known games.

Enter the Gungeon
Shared: Action Roguelike · Bullet Hell · Difficult

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

Spelunky 2
Shared: 2D Platformer · Difficult · Online Co-Op

Risk of Rain 2
Shared: Action Roguelike · Roguelite · Roguelike

Nuclear Throne
Shared: Action Roguelike · Difficult · Bullet Hell

20XX
Shared: Action Roguelike · 2D Platformer · Roguelite

Risk of Rain (2013)
Shared: Action Roguelike · Difficult · Roguelike

The Binding of Isaac: Rebirth
Shared: Action Roguelike · Difficult · Roguelike

Spelunky
Shared: Action Roguelike · Difficult · Platformer

Brotato
Shared: Action Roguelike · Bullet Hell · Local Co-Op

Voidigo
Shared: Action Roguelike · Twin Stick Shooter · Bullet Hell

SYNTHETIK: Legion Rising
Shared: Action Roguelike · Roguelite · Difficult

Skul: The Hero Slayer
Shared: Action Roguelike · Roguelite · Action

Megabonk
Shared: Action Roguelike · Bullet Hell · Roguelite

Streets of Rogue
Shared: Action Roguelike · Roguelite · Local Co-Op

Cuphead
Shared: Difficult · Local Co-Op · Platformer

Caveblazers
Shared: Action Roguelike · 2D Platformer · Roguelite

The Binding of Isaac
Shared: Action Roguelike · Difficult · Roguelike

Hades
Shared: Action Roguelike · Roguelite · Roguelike

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

Dead Estate
Shared: Action Roguelike · Twin Stick Shooter · Difficult

Neon Abyss 2
Shared: Action Roguelike · Online Co-Op · Bullet Hell

Dungreed
Shared: Action Roguelike · Roguelite · Difficult

Roboquest
Shared: Action Roguelike · Roguelite · Bullet Hell