Space Invaders

Clown Invaders
Shoot all the clowns in this Shockwave version of the arcade game Space Invaders.
http://www.ihateclowns.com/clowninvaders.php

Godpower
An old style Shockwave game, a homage to Space Invaders.
http://www.godpower.de/

Javaders
Variation of Space Invaders game in Java. Includes five levels and four difficulty settings.
http://www.cix.co.uk/~toyne/javaders/

Rumsfeld Invaders
Rumsfeld, the US Secretary of Defense from 2001-2006, is waging war. Fire missiles at him and avoid being hit by bombs in this Atari-style Flash-based game.
http://www.mcsandlerbrau.com/rumsfeldinvaders/rumsfeldinvaders.htm