Aliens is for version 1.3. It has 2 versions of the same map, Aliens10 for single player, and Aliens 20 for dukematch. The fils is 858KB in size and the file name is aliens1020.zip. It was released on September 23, 1996.

Aliens 10 has 1 small level. There are some Liztroopers, Slimers, and 1 boss in this map. To finish the map you need to either kill the boss,(good luck with that, there is not that much ammo), or make it to the spaceship.
Aliens 20 is the same level set up for Dukematch. It has 1 more transporter added.
Aliens is okay, good for about 10 minutes of play if that.

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