Warplanes

Player's plane in red color, can flip direction, fire instantly and can move up and down across the sky. Player has more fire power than the enemy. Several enemy planes hunt the player: black planes don't have fire power but will randomly drop in the sky with risk of hitting the player; cyan planes will hunt the player and randomly fire when within range of player's altitude and distance; yellow planes will wander in the sky and can fire at the player as well when within range.