Games like Halloween Defense
Games like Halloween Defense include Mount & Blade II: Bannerlord, Thronefall, Diplomacy is Not an Option, Mount & Blade: Warband, and Kingdom Rush 6: Genesis TD. We matched them by the tags players give Halloween Defense on Steam (RPG, Action, Tower Defense, Action RTS, and Indie): closest matches first, and among equally close ones the better-known games.

Mount & Blade II: Bannerlord
Shared: RPG · Medieval · Action

Thronefall
Shared: Tower Defense · Action · Action RTS

Diplomacy is Not an Option
Shared: Medieval · Zombies · Resource Management

Mount & Blade: Warband
Shared: RPG · Action · Medieval

Kingdom Rush 6: Genesis TD
Shared: Action · Tower Defense · Action RTS

Orcs Must Die! 2
Shared: Tower Defense · Action · RPG

Space Pirates and Zombies
Shared: Action · Indie · RPG

GemCraft - Chasing Shadows
Shared: Tower Defense · Action · Indie

Plants vs. Zombies GOTY Edition
Shared: Tower Defense · Zombies · Strategy

Kingdom Come: Deliverance II
Shared: RPG · Medieval · Action

They Are Billions
Shared: Tower Defense · Base Building · Zombies

Wolcen: Lords of Mayhem
Shared: RPG · Action · Indie

Deathtrap
Shared: RPG · Tower Defense · Action

Kingdom Come: Deliverance
Shared: RPG · Medieval · Action

Kingdom Rush - Tower Defense
Shared: Tower Defense · Action · Strategy

The Riftbreaker
Shared: Tower Defense · Base Building · RPG

DYSMANTLE
Shared: RPG · Zombies · Action

We Who Are About To Die
Shared: Action · RPG · Medieval

Mount & Blade
Shared: RPG · Action · Medieval

Survivalist
Shared: RPG · Action · Zombies

Kingdom Two Crowns
Shared: Tower Defense · Base Building · Medieval

Night of the Dead
Shared: Tower Defense · Zombies · Action

Last Epoch
Shared: RPG · Action · Top-Down

Bee Island
Shared: Tower Defense · Action RTS · Action