A friend pointed me to a Russian site called Independent Games Developers. I don't read Russian but here is the link
http://igdc.ru/
You can download all 5 entries with source code and everything here
http://igdc.ru/konkurses/defence2.rar
Here is a screen shot from Dan's entry. The five entries are mix of 2d and 3d work. Delphi source is available for all of them.
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