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