Games like Space Defender Xtreme

Here are some great alternatives to Space Defender Xtreme by Scratchmark :
Invaders Mars Defender
Invaders Mars Defender
★4.6
Outer Space Alien Invaders
Outer Space Alien Invaders
★3.5
Universica: Space Shooter
Universica: Space Shooter
★5.0
Classic Phoenix
Classic Phoenix
★4.1
Galaxy Alien Invaders Classic
Galaxy Alien Invaders Classic
★4.2
Space Swift: The Sky Defender
Space Swift: The Sky Defender
★4.2
Invaders Deluxe
Invaders Deluxe
★4.1
Battlespace Retro: arcade game
Battlespace Retro: arcade game
★4.1
Classic Invaders Retro
Classic Invaders Retro
★4.2
Space Shooter - Galaxy Defense
Space Shooter - Galaxy Defense
★4.7
Galaxy Storm - Retro Invader
Galaxy Storm - Retro Invader
★3.7
Sea Invaders - Alien shooter
Sea Invaders - Alien shooter
★4.4
Galaxy Keeper: Space Shooter
Galaxy Keeper: Space Shooter
★4.3
Galga Space Alien Invaders
Galga Space Alien Invaders
★5.0
Alien Shooter: Galaxy Invaders
Alien Shooter: Galaxy Invaders
★4.5
Galaxy Invaders: Space Shooter
Galaxy Invaders: Space Shooter
★4.2