Games like Anomaly Korea
Games like Anomaly Korea include Infested Planet, Creeper World 3: Arc Eternal, Aliens: Dark Descent, Taur, and Defense Grid: The Awakening. We matched them by the tags players give Anomaly Korea on Steam (Strategy, Action, Tower Defense, Sci-fi, and Indie): closest matches first, and among equally close ones the better-known games.

Infested Planet
Shared: Strategy · Action · Tower Defense

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

Aliens: Dark Descent
Shared: Strategy · Action · Sci-fi

Taur
Shared: Strategy · Tower Defense · Action

Defense Grid: The Awakening
Shared: Strategy · Tower Defense · Sci-fi

Anomaly Warzone Earth
Shared: Strategy · Tower Defense · Action

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

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

Sanctum 2
Shared: Tower Defense · Strategy · Action

Warhammer 40,000: Dawn of War III
Shared: Strategy · Sci-fi · Action

STAR WARS™ Empire at War - Gold Pack
Shared: Strategy · Sci-fi · RTS

FTL: Faster Than Light
Shared: Strategy · Sci-fi · Indie

Revenge of the Titans
Shared: Strategy · Tower Defense · Action

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

DG2: Defense Grid 2
Shared: Strategy · Tower Defense · Action

Door Kickers
Shared: Strategy · Action · Top-Down

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

Anomaly 2
Shared: Strategy · Action · Tower Defense

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

Command & Conquer Red Alert™ 2 and Yuri’s Revenge™
Shared: Strategy · Action · Singleplayer

Space Run
Shared: Strategy · Tower Defense · Sci-fi

Bloons TD 6
Shared: Strategy · Tower Defense · Singleplayer

Heat Signature
Shared: Indie · Action · Strategy

Iron Marines
Shared: Strategy · Sci-fi · Action