AAQR: ExionFly 3D (game)

ExionFly 3D is a 3D shooter where you pilot this plane and shoot at various things both in the sky and on the ground, and yes, it's in 3D. You're looking at your plane from behind, and you CAN climb, dive, do barrel rolls, and shoot lots of different things. Aiming at the planes can be difficult, as is strafing the ground targets, but it actually works on an OG Droid well enough. Not bad!

http://www.appbrain.com/app/exionfly-3d/opengl_es.exionfly

AAQR: Space War HD (game)

Space War HD is your typical "Galaga" type shooter where you can go forward, back, side to side, and get a variety of weapons and powerups. It is quite playable on my OG Droid, but isn't anything really remarkable.

http://www.appbrain.com/app/space-war-hd/virtualgs.spacewar.hd

AAQR: Meteor Blitz (game)

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

AAQR: Age of Zombies (shooter, $1.49)

Age of Zombies is a dual-stick shooter, which means you can move in one direction and shoot in another direction. The best known example is probably Robotron 2084, and an Android example would be Pewpew.

It sounds like a fun little game, but unfortunately it won't start on my OG Droid. I guess it needed too much memory.

Amazon exclusive:

http://www.amazon.com/Age-Zombies-WiFi-Download-Only/dp/B0058P7KUA