Past Events:
| 2008 (Defcon 16) | Build a shooting gallery robot, elimination tournament |
| 2007 (Defcon 15) | Build a shooting gallery robot, elimination tournament |
| 2006 (Defcon 14) | Build a shooting gallery robot, timed tournament |
| 2005 (Defcon 13) | Build a mobile robot that can traverse an arena picking up ping pong balls, then shoot down cans with them. |
| 2004 (Defcon 12) | Build a mobile robot that can pick up ping pong balls and transport them across an arena. |
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