Games like Slash
Games like Slash include Vampire Survivors, Timberman, Brawlhalla, Death Must Die, and One Finger Death Punch. We matched them by the tags players give Slash on Steam (Action, Casual, 2D Fighter, Arcade, and Bullet Hell): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Bullet Hell · Pixel Graphics · 2D

Timberman
Shared: Casual · Action · Pixel Graphics

Brawlhalla
Shared: 2D Fighter · Casual · Action

Death Must Die
Shared: Bullet Hell · Action · Pixel Graphics

One Finger Death Punch
Shared: Action · 2D Fighter · Indie

Megabonk
Shared: Action · Bullet Hell · Indie

LUFTRAUSERS
Shared: Action · Arcade · Bullet Hell

Skul: The Hero Slayer
Shared: Action · Indie · Pixel Graphics

Planes, Bullets and Vodka
Shared: Action · Casual · Bullet Hell

Halls of Torment
Shared: Bullet Hell · Action · Pixel Graphics

GrandChase
Shared: Action · Casual · Free to Play

Cyberhunt
Shared: Action · Casual · Indie

BALL x PIT
Shared: Action · Arcade · Bullet Hell

Bit Blaster XL
Shared: Bullet Hell · Arcade · Action

Exit the Gungeon
Shared: Action · Arcade · Bullet Hell

Boneraiser Minions
Shared: Bullet Hell · Pixel Graphics · 2D

MARVEL Tōkon: Fighting Souls
Shared: Action · Casual · 2D Fighter

A Dance of Fire and Ice
Shared: Arcade · 2D · Indie

Katana ZERO
Shared: Action · Pixel Graphics · Hack and Slash

One Finger Death Punch 2
Shared: Action · Casual · Indie

UFO 50
Shared: Action · Arcade · Pixel Graphics

Akane
Shared: Action · Indie · Casual

Rhythm Doctor
Shared: Action · Pixel Graphics · Indie

Your Only Move Is HUSTLE
Shared: Action · 2D Fighter · 2D