diff --git a/src/main.rs b/src/main.rs
index 3c80352..e2522a5 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -21,10 +21,17 @@ fn model(app: &App) -> Model {
         .build()
         .unwrap();
 
-    Model {
-        _window,
-        particles: Vec::new(),
+    let boundary = app.window_rect();
+    let mut particles = Vec::new();
+
+    for _ in 0..100 {
+        let x = random_range(boundary.left(), boundary.right());
+        let y = random_range(boundary.top(), boundary.bottom());
+        let particle = Particle::new(Vec2::new(x, y));
+        particles.push(particle);
     }
+
+    Model { _window, particles }
 }
 
 // Handle events related to the window and update the model if necessary