Games like DEFEND EARTH casual space game

Here are some great alternatives to DEFEND EARTH casual space game by Felix Schmüser :
Invaders Mars Defender
Invaders Mars Defender
★4.6
Space Defender Xtreme
Space Defender Xtreme
★3.8
Sky Champ: Space Shooter
Sky Champ: Space Shooter
★4.5
Space Bombardiers (2D/3D)
Space Bombardiers (2D/3D)
★4.9
Galaxy Attack: Space Battle
Galaxy Attack: Space Battle
★3.3
Space Cadet Defender Invaders
Space Cadet Defender Invaders
★4.5
Galaxy Squad: Space Shooter
Galaxy Squad: Space Shooter
★4.2
Classic Invaders Retro
Classic Invaders Retro
★4.3
Space Force: Alien Shooter War
Space Force: Alien Shooter War
★4.2
Cosmic Hero (Space Shooter)
Cosmic Hero (Space Shooter)
★3.8
Invaders from Androidia
Invaders from Androidia
★3.7
Monster Shooter: Space Invader
Monster Shooter: Space Invader
★4.4
Invaders
Invaders
★4.1
Operation: New Earth
Operation: New Earth
★3.8
Galaxy Attack Survival Games
Galaxy Attack Survival Games
★4.0
Alien Flying UFO Space Ship
Alien Flying UFO Space Ship
★3.2