Is the collision system just broken on BB3? I can't seem to get it to work and even some of the demo scenes have purposefully left out collisions that I also cannot seem to get working. For example on the Roll demo, you do not collide with the cones. Even if you enable physics on the cones, set them to static and add a collider, the ball just ignores them. I suspect this is because they are sub objects of the Helix which already has a collider. I can't see how any game is going to work though if you can't have collisions on children. I also tried adding nodes to the Actor object to detect collisions but they do not fire. This is beta 2, but I had the same problems with beta 1.