Alien Infiltration is for version 1.3. It has 2 levels and the file is 15.8KB in size. The file name is aigbsc.zip. It was released on October 19, 1997. Note: There are 2 easy ways to play this as a mini episode. First you can follow the instructions in the text doc, or you can just rename Aigbase.map to E1L1.map and Aiscraft.map to E1L2.map then go to episode 1.

Alien Infiltration has very simple level design and good gameplay. There is a lot of health and ammo to be found. There is nothing special here just basic Duke Nukem. It took me about 30 minutes to finish both levels and is worth playing at least once. I rate it as fair with 2 out of 5 stars.