Games like Alienum: The Alien War Battle

Here are some great alternatives to Alienum: The Alien War Battle by Flathead Studios :
Xeno Command
Xeno Command
★3.5
Iron Marines 2 - Invasion RTS
Iron Marines 2 - Invasion RTS
★4.4
Alien Raid: Monster evolution
Alien Raid: Monster evolution
★3.9
Air Force - Alien Invader
Air Force - Alien Invader
★4.6
Alien Shooter World
Alien Shooter World
★4.5
Operation: New Earth
Operation: New Earth
★3.9
Alien Shooter: Galaxy Invaders
Alien Shooter: Galaxy Invaders
★4.5
Space Quest: Alien Invasion
Space Quest: Alien Invasion
★4.4
Alien Survivor: Base Defence
Alien Survivor: Base Defence
★4.2
Tower Defense: Alien Invasion
Tower Defense: Alien Invasion
★4.1
Universe Invader 2: Alien War
Universe Invader 2: Alien War
★4.4
Outer Space Alien Invaders
Outer Space Alien Invaders
★3.5
Protect & Defense: Tower Zone
Protect & Defense: Tower Zone
★4.5
Hero Alien Fight Battle Force
Hero Alien Fight Battle Force
★3.6
Alien Creeps TD
Alien Creeps TD
★4.5
Xeno Alien Shooter: Space Game
Xeno Alien Shooter: Space Game
★4.2