// Step 1
// Top-level outline

// Declare game variables

void setup() {
  // Setup sketch
  
  // Create and initialize all balloons
}

void draw() {
  // Update elapsedTime

  // Check for game over

  // Inflate balloons

  // Clear background

  // Draw all balloons

  // Draw header

}

void mousePressed() {
  // Pop balloons with this mouse location

  // Increment score

}