Twin Hawk (ツインホーク)

Flying Shark-like WW2 airplane shoot'em-up.

Developed by Toaplan, who also created Flying Shark, this game is very similar but a bit less polished gameplay. You have an airplane squadron to aid you instead of smartbombs (if you hold the squadron button for a while you get a smartbomb anyway) and basically blast away at the enemies as you go along.