Games like Marswar TD
Games like Marswar TD include Bloons TD 6, Totally Accurate Battle Simulator, Kingdom Rush - Tower Defense, GemCraft - Chasing Shadows, and Kingdom Rush Origins - Tower Defense. We matched them by the tags players give Marswar TD on Steam (Strategy, Tower Defense, Singleplayer, 3D, and Indie): closest matches first, and among equally close ones the better-known games.

Bloons TD 6
Shared: Strategy · Tower Defense · Singleplayer

Totally Accurate Battle Simulator
Shared: Strategy · Sandbox · Singleplayer

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

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

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

Plague Inc: Evolved
Shared: Strategy · Singleplayer · Indie

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

Artisan TD
Shared: Strategy · Tower Defense · Difficult

Mount & Blade II: Bannerlord
Shared: Strategy · Singleplayer · Sandbox

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

Thronefall
Shared: Strategy · Tower Defense · 3D

Shadow Tactics: Blades of the Shogun
Shared: Strategy · Singleplayer · Indie

FTL: Faster Than Light
Shared: Strategy · Singleplayer · Indie

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

Bloons TD 5
Shared: Strategy · Tower Defense · Singleplayer

Broken Arrow
Shared: Strategy · Modern · 3D

Teardown
Shared: Sandbox · Singleplayer · Indie

Emberward
Shared: Tower Defense · Strategy · 3D

Total Tank Simulator
Shared: Strategy · Sandbox · Indie

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

Dungeon Defenders
Shared: Tower Defense · Strategy · Singleplayer

Spirits of the Hellements - TD
Shared: Strategy · Tower Defense · Singleplayer

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

Freeman: Guerrilla Warfare
Shared: Strategy · Singleplayer · Sandbox