Thanks for playing! Yes, I added the wind because I was afraid the player would simply camp around the right side of the screen and make the game a little too easy. So I added the wind to force the player to the left side of the screen to give enemies time to come in. The story takes place in the far future and the flying ships are robots created by humans to kill other humans. But the robots became self-aware and started killing all living things, leading to the extinction of humans. They had gone dormant until now.