There is a contest on my other game site but you almost have to know Civilization 3.

You can win a free copy of World Wargamer Pack - a collection of some of the best wargames available. The collection includes:

Return to Castle Wolfenstein - "A must have game of the year"
Steel Panthers: World at War - "Best 20th Century Era Computer Wargame"
LGeneral - A modern Panzer General successor

To get your free World Wargamer's Pack, all you need to do is to find out and send us the building costs for 7 (seven) city improvements used in the World 2003 scenario.

For each city improvement, you will need to cite 2 Internet sources, along with valid addresses (NO BOOKS/JOURNALS/NEWSPAPERS, INTERNET SOURCES ONLY!). If information for a particular city improvement has already been submitted, you will be notified within 48 hours of your submission.
This competition closes on 30th June 2003. If you submit building costs for 7 unique city improvements by that date, you will be sent a copy of World Wargamer's Pack - at no cost.

More details here.