3D Realms sends along a 50mb demo for the budget game Duke Nukem: Manhattan Project, containing the first episode of the game. You can grab the demo from one of our eight Fileshack mirrors by going here. In related news, you can also download an updated editor which you'll need if you have the 1.01 patch installed and want to create content for the game. This editor does not work on the demo. Files are provided to you courtesy of Speakeasy.