Future is for version 1.3. It has 5 levels and the file is 335KB in size. The file name is episode.zip. It was released on September 30, 1999.

Future has small levels with good level design and good gameplay. I rate it as good with 3 out of 5 stars. There is also a version of Future that was modified for 1.4/1.5. It has 5 levels and the file is 196KB in size. The file name is Duke2088.zip. the file was modified on April 19, 2007. Both versions are included in the zip file.