Steambirds Alliance

Steambirds Alliance is a massively-cooperative bullet-hell aerial shooter, aka an "MMO shmup." Fly with dozens of friends in an open world full of cruel bosses and endless cascades of deadly bullets! We’ve got a big main world, hundreds of unique enemies, a wide variety of secret missions, and many distinct plane types for you to unlock and master. But fair warning: Steambirds Alliance is a permadeath game - when your plane is shot down, it will be lost to you forever! (However, your pilot will eject and potentially level up if you've fought bravely enough!)
Steambirds Alliance is brought to you by Spry Fox. We co-developed Realm of the Mad God, the first MMO shmup back in 2010. At the time, we called it the most co-op game ever; we fully intend to top that with Steambirds Alliance!