Hello, this movie title will be a difficult one. It surely was an asian movie I used to watch when I was a kid at least 25 years ago. I am not sure
about its age even back then but it was a color movie though. There was a sentient ship computer (or core) of a crashed/landed alien ship resembling
a big emerald. There was a group of bad guys (the boss was a europan dude) who took it from the ship for some surely bad purpose.
Then there was this group of young asian people trying to help it get back to the ship, but not before they had some fun with it. I remember
the computer could alter reality for you when you were close enough to it – like this one time when one of the boys was voyeuring a girlfriend
behind a window and asking the computer to make her strip down. It granted him the wish but in the end it appeared as if she was peeling away
her skin to reveal a lizard one underneath, the dude was shocked and fell of a window. Then I remember the final fighting scene taking place
in some ancient ruins where the ship was hidden and the evil boss using two sais (ninja weapons resembling small tridents).  The computer “died” in the end, but not before “giving birth” to its smaller successor.
I tried to find it using google, searched a number of databases with sci-fi movies from 1960s-1990s with no success. But the databases are not
that perfect as I did not notice them to list another movie from my childhood called “Gunhed/Ganheddo” from 1989. Any old-timer remembering
this one? 🙂