This game was another Amazon AppStore Giveaway a while back.
Meteor Blitz is a "dual-stick" shooter where you are tasked to shoot up as many meteors as possible. There are different weapons, as they are effective against different meteors, and of course you want to avoid getting hit.
Quite playable on OG Droid. Highly recommended if you like the genre.
http://www.appbrain.com/app/meteor-blitz/com.alleylabs.MeteorBlitz