Really like the look of this game, but the hitbox size is too large and the plane moves too slowly for how fast and tightly packed the bullets get. If the hitbox was reduced and enemy fire came more slowly, this would easily be something I could see putting quarters into in an arcade.
Other minor gripes include sliding down the screen when not accelerating and not being able to fire when respawning. Moving down all the time makes dodging much harder, and not being able to fire safely makes it very difficult to remove the enemies who killed you just moments ago, which leads to a screen that is too full of enemies.