HomeGamesArcadeSpace Defender XtremeGames like Space Defender Xtreme Here are some great alternatives to Space Defender Xtreme by Scratchmark : Invaders Mars Defender ★4.6 Classic Phoenix ★4.1 Space Cadet Defender Invaders ★4.5 Invaders Deluxe ★4.1 Space Swift: The Sky Defender ★4.3 Battlespace Retro: arcade game ★4.1 Classic Invaders Retro ★4.3 Galaxy Storm - Retro Invader ★3.6 Sea Invaders - Alien shooter ★4.5 Galga Space Alien Invaders ★5.0 Celestial Assault ★4.0 Retro Space War: Shooter Game ★4.5 Monster Shooter: Space Invader ★4.4 Galaxy Invaders: Space Shooter ★4.4 Galaxy Shooter: Air Force War ★4.8 Space Shooter - Galaxy Attack ★4.7