You do not need a fire button — the ship fires by itself. All you
ever decide is where to be.
Fly with the arrow keys, or just drag anywhere on the screen.
The ship rides above your finger so you can see it.
Your hitbox is tiny — far smaller than the ship. A shot that looks
like it clipped a wing did not.
A hit costs hull, not a ship. Only when the hull is gone do you
lose one. The bar beside the ships is what is left.
Asteroids do not shoot, but they will break your hull and they
stop your fire. A big one splits into two smaller ones.
Waves come at you in patterns. Turrets hold station and fire spreads;
hulks throw rings you have to move through.
A flagship waits at the end of every sector. It takes a great deal of
killing, and it changes attack twice as it weakens. It glows just before
it fires — that is your cue.
Sectors never stop. Deeper means faster, denser and a tougher flagship.