Duke Nukem: D-Day

Prototype of "Duke Nukem: D-Day", also known under the titles "Man of Valor" and "American Bad Ass", the cancelled third game in the n-Space series of third-person Duke Nukem games, following "Duke Nukem: Time to Kill" and "Duke Nukem: Land of the Babes".

The game was remarkably far along in development at this stage, with 12 levels being available inside the menu select, and a plethora of weapons to try out. A more unserious person might even claim that the game was "90% complete".

Interestingly, development for the game continued up until its cancellation in 2003. One can only wonder how much more complete the product was at that stage -- much like a certain other prototype out there.