diff --git a/src/simulator.cc b/src/simulator.cc
index 5eb765f..5440d51 100644
--- a/src/simulator.cc
+++ b/src/simulator.cc
@@ -45,11 +45,11 @@ void simulator_init() {
 
   double restitution = 0.3;
 
-  int num_bodies = 5;
+  int num_bodies = 10;
   for (int i = 0; i < num_bodies; i++) {
     SimBody body;
 
-    bool create_sphere = false;
+    bool create_sphere = i %2;
 
     if (!create_sphere) {
       body = CreateBoxBody(
@@ -102,7 +102,7 @@ void simulator_reset() {
 
   for (int i = 0; i < sWorld.mBodies.size(); i++) {
     sWorld.mBodies[i].q.block(0, 0, 3, 1) =
-        Vector3d::Random() * 0.3 + Vector3d(0., 5., 0.);
+        Vector3d::Random() * 2.5 + Vector3d(0., 5., 0.);
     sWorld.mBodies[i].q[2] = 0.;
   }