Stormhawk

Stormhawk is a vertical shooter in the old arcade shape: thirty-two hand-built missions over the Pacific, a boss at the end of every one, and a score multiplier that only survives if you keep killing. The barrel roll is the defensive move and the thing you will forget you have. Between missions you land and spend what you earned in the hangar, which is where the campaign actually gets easier. There is a daily mission everyone flies identically, a weekly run with mutators, and a boss rush against all thirty-two.