diff --git a/Waveform/GameViewController.swift b/Waveform/GameViewController.swift
index 50c9e96..0ced5e5 100644
--- a/Waveform/GameViewController.swift
+++ b/Waveform/GameViewController.swift
@@ -63,6 +63,7 @@ class GameViewController: NSViewController, SCNSceneRendererDelegate {
                 for j in 0..<GameViewController.numberOfBallsPerSide {
                     let ijSphere = sphere.clone()
                     balls.append(ijSphere)
+                    ijSphere.name = "sphere\(i),\(j)"
                     ijSphere.worldPosition = SCNVector3(x: CGFloat(-GameViewController.numberOfBallsPerSide / 2) + CGFloat(i),
                                                         y: 0.0,
                                                         z: CGFloat(-GameViewController.numberOfBallsPerSide / 2) + CGFloat(j))
diff --git a/Waveform/art.scnassets/blank.scn b/Waveform/art.scnassets/blank.scn
index 06268f8..08f35b7 100644
Binary files a/Waveform/art.scnassets/blank.scn and b/Waveform/art.scnassets/blank.scn differ