I DON'T THINK I've ever shared this unfinished project.
You man an anti-aircraft turret located in the center of a besieged city. It is up to you to defend your city from enemy aircraft.
Very loosely inspired by Fighter Pilot.
-would use a crosshair to aim. The crosshair would be free-moving, the screen would scroll when the crosshair reached the edge of the screen
-use 24+ pixel width sprites for enemy aircraft
-changing weather/visibility conditions
-have a very robust 3D engine underneath it all, enemy fighters would approach from the horizon, pass over the city, bombing buildings that they passed over, and then fly back over the horizon.
-city buildings stored in RAM so that you can see which buildings are still standing. When they're all gone: game over.
Why I stopped working on it (besides usual reasons of lack of time, etc.):
-I really, really, really wanted the city buildings to have a parallax effect. I could not figure out how to do it (with the playfield).
Any brilliant insights on how to display (at least) three rows of parallax-scrolling cityscape that (a) doesn't constantly flicker and (b) spans at least 80% (128 pixels) of the width of the screen?