Games like World War Whack
Games like World War Whack include Vampire Survivors, BALL x PIT, Megabonk, Skul: The Hero Slayer, and Halls of Torment. We matched them by the tags players give World War Whack on Steam (Action, Casual, Arcade, Action Roguelike, and Roguelite): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Roguelite · 2D

BALL x PIT
Shared: Action · Arcade · Roguelite

Megabonk
Shared: Action Roguelike · Roguelite · Action

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

Halls of Torment
Shared: Action Roguelike · Roguelite · Action

Hades
Shared: Action Roguelike · Roguelite · Action

Banana
Shared: Casual · 2D · Arcade

Cursorblade
Shared: Action Roguelike · Arcade · Roguelite

Rocket Rats
Shared: Action Roguelike · Casual · Action

pureya
Shared: Casual · Arcade · 2D

Boneraiser Minions
Shared: Action Roguelike · Roguelite · 2D

MARVEL Tōkon: Fighting Souls
Shared: Action · Casual · Arcade

Nova Drift
Shared: Arcade · Roguelite · Action Roguelike

Utopia Must Fall
Shared: Casual · Arcade · Roguelite

Octogeddon
Shared: Action · Action Roguelike · Casual

Cult of the Lamb
Shared: Action Roguelike · Roguelite · Cute

Death Must Die
Shared: Action Roguelike · Roguelite · Action

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

Zuma Deluxe
Shared: Arcade · Casual · 2D

Timberman
Shared: Casual · Action · Arcade

Sephiria
Shared: Action Roguelike · Roguelite · Action

Deep Rock Galactic: Survivor
Shared: Action Roguelike · Roguelite · Action

Shower With Your Dad Simulator 2015: Do You Still Shower With Your Dad
Shared: Arcade · Casual · 2D

Have a Nice Death
Shared: Action Roguelike · Action · 2D