Games like Karim and the 60 Thieves
Games like Karim and the 60 Thieves include Hades, Have a Nice Death, Vampire Survivors, Skul: The Hero Slayer, and BALL x PIT. We matched them by the tags players give Karim and the 60 Thieves on Steam (Action, Action Roguelike, Arcade, Hack and Slash, and Turn-Based Tactics): closest matches first, and among equally close ones the better-known games.

Hades
Shared: Action Roguelike · Hack and Slash · Action

Have a Nice Death
Shared: Action Roguelike · Hack and Slash · Action

Vampire Survivors
Shared: Action Roguelike · 2D · Action

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

BALL x PIT
Shared: Action · Arcade · Action Roguelike

Hades II
Shared: Action · Hack and Slash · Action Roguelike

Halls of Torment
Shared: Action Roguelike · Action · Arcade

BlazBlue Entropy Effect
Shared: Action Roguelike · Action · 2D

Shape of Dreams
Shared: Action Roguelike · Hack and Slash · Action

Hero Siege
Shared: Action Roguelike · Hack and Slash · Action

Megabonk
Shared: Action Roguelike · Action · Arcade

Windowkill
Shared: Action · Action Roguelike · Arcade

Dead Cells
Shared: Action Roguelike · 2D · Hack and Slash

Castle Crashers®
Shared: 2D · Hack and Slash · Action

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

Windblown
Shared: Action Roguelike · Hack and Slash · Action

Streets of Rage 4
Shared: Action · Arcade · 2D

Rogue Legacy
Shared: Action Roguelike · Action · 2D

Risk of Rain Returns
Shared: Action Roguelike · 2D · Action

Bendy: Lone Wolf
Shared: Action Roguelike · Hack and Slash · Arcade

Monsters are Coming!
Shared: Action · Action Roguelike · Top-Down

Death Must Die
Shared: Action Roguelike · Action · Hack and Slash

Broforce
Shared: Action · 2D · Indie

Downwell
Shared: Action Roguelike · Arcade · Action