Sopwith - A playable demo of Day 17

Today the js13k contest is half way through of so - My Sopwith game is just about playable.
 I've mostly been checking off the basic game play features:

• The player's plane is full featured allowing a flip, guns and bombs.
• The world has smoke billows to show when planes go down.
•  The AI can fly a bi-plane (not well, but aggressively and fearlessly) and shoots me down often enough. 

A new playable demo is available here 

Use , (comma) and / (forward slash key) to fly up and down.

Use Z and X to control the throttle.

Use Space to Fire

Use B to drop a bomb

Use . (period) to flip the plane