Mac users interested in Scrolling shoot-em-up app generally download:
Pacific Wings is a mobile hit game. This application is a vertical scrolling shoot-em-up and it features retro-style-graphics. The story plays during the "Battle of Midway" in 1942 where you have to fly an American P-38-airplane against all kinds of Japanese airplanes.
You can control your warbird with the touchscreen. The plane shoots automatically.
OpenTyrian is an open-source port of the DOS shoot-em-up Tyrian. Tyrian is a great arcade-style vertical scrolling shooter game. The story is set in 20031 where you play as Trent Hawkins, a skilled fighter-pilot employed to fight Microsol and save the galaxy.
Starbike is a Defender-like scrolling shoot ‘em up game. You fly your starbike around the lunar landscape and collect Orolas. That’s small green aliens to you and me, and they’re really good for making perfume and catfood. You have to collect them from each level and dump them into a teleporter to send them back to your ship
