Have a gander at retrospec.sgn.net.

I've completed Quazatron and Halls Of The Things in Delphi. Assault is well underway, and there is another Delphi project there called Turmoil. In fact I've also written a 'game' called Spectrum Adventure for the Sudslore adventure creator (Sudslore.com). That is in Delphi too.

Matt.