The menace come from above! Protect the humanoid population from the waves of aliens coming to abduct them. Thankfully the shield of your Defender can take a few hit.
Press N to start a game or shoot, and WASD or the arrow keys to move your Defender over the humanoid city. If your browser struggles to update the favicon, press enter to toggle between favicon & canvas display.
The game logic isn't really complex but remains true to the original Defender and provides enough action for 16×16 pixels. The original game mechanics would make Defender of the favicon insanely difficult. Therefore a few adjustments were done : none of the enemies fire at you, your Defender got upgraded with a shield, and finally the Landers do not mutate into unstoppable war machines after abducting a humanoid but wander in your general direction.
Obviously since this little game makes use of established and working draft web standards, all browsers are not equal. Here is a list of how well the main browsers are able to defend the humanoids.
You know you want to Digg, Reddit, Twitt(url)y, Pouet this.
I tried to stay away from my usual size optimizations experiments, but I guess this little game still falls in that category. One day I will make something BIG.