Unity 4.x Game Development by Example Beginner's Guide

Time for action – boy O boy

Unity doesn't have a Tube primitive that we can use to create the O player piece, but we can use the Cylinder primitive to create an "un-holey" approximation.

1. Create a Cylinder.
2. Rename it as O.
3. Scale it to 3.5,0.5,3.5.
   
4. Add a Box Collider to the Cylinder (by navigating to Component | Physics | Box Collider). Unity asks if you want to replace the existing Capsule Collider with a Box Collider. Yes you do!
5. Add a Rigidbody Component.
6. Position the O at 0,0,0.
7. Create a Prefab and name it O.
8. Drag the O GameObject inside the O Prefab.
9. Delete the O GameObject from the Hierarchy panel.