Games like Defend The Highlands
Games like Defend The Highlands include Plants vs. Zombies GOTY Edition, Rock of Ages, Orcs Must Die!, Orcs Must Die! 2, and Rock of Ages 2: Bigger & Boulder™. We matched them by the tags players give Defend The Highlands on Steam (Strategy, Indie, Comedy, and Tower Defense): closest matches first, and among equally close ones the better-known games.

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

Rock of Ages
Shared: Strategy · Comedy · Indie

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

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

Rock of Ages 2: Bigger & Boulder™
Shared: Strategy · Comedy · Indie

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

Bloons TD 6
Shared: Strategy · Tower Defense

Dungeon of the ENDLESS™
Shared: Strategy · Tower Defense · Indie

Rock 'N' Roll Defense
Shared: Strategy · Tower Defense · Indie

Creeper World 3: Arc Eternal
Shared: Strategy · Indie · Tower Defense

Ancient Planet Tower Defense
Shared: Strategy · Indie · Tower Defense

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

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

Defense Grid: The Awakening
Shared: Strategy · Tower Defense · Indie

Battle Ranch: Pigs vs Plants
Shared: Strategy · Indie · Tower Defense

X-Morph: Defense
Shared: Strategy · Tower Defense · Indie

Warstone TD
Shared: Strategy · Indie · Tower Defense

Sanctum 2
Shared: Strategy · Tower Defense · Indie

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

Town of Salem
Shared: Strategy · Indie · Comedy

Bardbarian
Shared: Indie · Strategy · Tower Defense

CastleStorm
Shared: Indie · Tower Defense · Strategy

Dungeon Warfare
Shared: Strategy · Indie · Tower Defense

Infested Planet
Shared: Strategy · Tower Defense · Indie