How does your game fit the theme?
My game, switches between phases which in game are called the calm and rage. The 'calm before the storm' in my game's case is the calm that separates the waves of enemy's you have to face, acting as a respite. The particle system corresponds to this with a lighter rain during the calm.

Did you write all the code and made all the assets from scratch?
No, most assets were made by me but I used a font and sound not created by me. They are credited in the description