Dogfight your way to the top of the leaderboards, upgrading along the way to become the most powerful biplane.
Use your mouse to steer the plane. Left click shoots. Right click boosts. Kill enemies or collect blue orbs to level up.
Your plane leaves an exhaust trail as you fly, more so when you boost. Use this to follow enemies, but also be aware that you too can be followed.
Crates give you powerups, from bonus health to bonus damage.