Games like BumSlayer
Games like BumSlayer include No More Heroes, Judgment, Devil May Cry 5, God of War, and MADNESS: Project Nexus. We matched them by the tags players give BumSlayer on Steam (Hack and Slash, Action, Beat 'em up, 3D Fighter, and Arcade): closest matches first, and among equally close ones the better-known games.

No More Heroes
Shared: Action · Hack and Slash · Beat 'em up

Judgment
Shared: Action · Beat 'em up · 3D Fighter

Devil May Cry 5
Shared: Hack and Slash · Action · Violent

God of War
Shared: Action · Hack and Slash · Violent

MADNESS: Project Nexus
Shared: Beat 'em up · Hack and Slash · Action

No More Heroes 2: Desperate Struggle
Shared: Action · Hack and Slash · Beat 'em up

Dead as Disco
Shared: Beat 'em up · Hack and Slash · Action

No More Heroes 3
Shared: Hack and Slash · Action · Beat 'em up

ONE PIECE: PIRATE WARRIORS 4
Shared: Hack and Slash · Beat 'em up · Action

Hi-Fi RUSH
Shared: Action · Hack and Slash · Singleplayer

Sacred 3
Shared: Hack and Slash · Action · Arcade

Midnight Fight Express
Shared: Action · Beat 'em up · 3D

Like a Dragon Gaiden: The Man Who Erased His Name
Shared: Action · Beat 'em up · Violent

Black Myth: Wukong
Shared: Action · Hack and Slash · 3D

NINJA GAIDEN 4
Shared: Hack and Slash · Action · Violent

Stellar Blade™
Shared: Action · Hack and Slash · 3D

TEKKEN 7
Shared: Action · Arcade · 3D Fighter

Castle Crashers®
Shared: Hack and Slash · Beat 'em up · Action

DmC: Devil May Cry
Shared: Hack and Slash · Action · Beat 'em up

Lost Judgment
Shared: Action · Beat 'em up · 3D Fighter

Like a Dragon: Ishin!
Shared: Action · Beat 'em up · Hack and Slash

Bayonetta
Shared: Action · Hack and Slash · Beat 'em up

Yakuza Kiwami 2
Shared: Action · Beat 'em up · Violent

Ryse: Son of Rome
Shared: Hack and Slash · Action · Linear