La Guerra Esosa 

A fast and funny Space Invaders clone by Bottomap Software
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Scott's Space Invaders 

Scott's Space Invaders is like the good ol' space invaders that you remember, but with a few additional perks and powerups, some new tricks, and designed to operate on modern PC hardware. It requires windows XP and DirectX 9.0 or higher.
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Political Invaders 

Throw pies at the Politicians and their henchmen. The game plays similarly to the popular Space Invaders arcade game. Features 3D rendered graphics, and requires DirectX 9.0 or greater. Fun, exciting, and free!
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