Games like Defend Them !
Games like Defend Them ! include Orcs Must Die! 2, Orcs Must Die!, Mount & Blade II: Bannerlord, Freeman: Guerrilla Warfare, and Mount & Blade: Warband. We matched them by the tags players give Defend Them ! on Steam (Strategy, Action, Indie, RPG, and Tower Defense): closest matches first, and among equally close ones the better-known games.

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

Orcs Must Die!
Shared: Action · Strategy · Tower Defense

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

Freeman: Guerrilla Warfare
Shared: Strategy · Action · RPG

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

Deathtrap
Shared: Action · Strategy · RPG

Orcs Must Die! 3
Shared: Strategy · Tower Defense · Action

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

Kingdom Rush 5: Alliance TD
Shared: Strategy · Tower Defense · Indie

Sang-Froid - Tales of Werewolves
Shared: Strategy · Action · Indie

SMITE 2
Shared: Action · Strategy · Third Person

Middle-earth: Shadow of War
Shared: Action · RPG · Third Person

Dragon Age™: The Veilguard
Shared: Strategy · RPG · Fantasy

SMITE®
Shared: Action · Strategy · Third Person

Monster Hunter: World
Shared: Action · RPG · Third Person

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

Sanctum 2
Shared: Strategy · Tower Defense · Action

Mount & Blade
Shared: Strategy · RPG · Action

BioShock Infinite
Shared: Action · First-Person · RPG

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

Idle Champions of the Forgotten Realms
Shared: Strategy · Fantasy · Indie

Middle-earth™: Shadow of Mordor™
Shared: Action · Third Person · Fantasy

Caster
Shared: Action · Indie · Strategy

Mount & Blade: With Fire & Sword
Shared: RPG · Action · Strategy