i heard rumors that one can get a alien weapon in Fallout 2. Is it real? How can i obtain it? Someone told me it is possible to get it during a random encounter on the map. Are there any possibilities how to increase the chance of this encounter?
You can check the corresponding wiki page here, it give plenty of info. Basically, in Fallout 1 this is a random special encounter, while in F2 it can be obtained both in a random special encounter, and by a specific route.
Hope this helps.