Fairfox: thanks! x
o yah its probs easier when its uuuh long-term envolvement hmm (liek taht trek show alien race language)? launchpad an' teh rest.
also! written medium helps alot i imagine, to solidify an' establish such thangs
You're probably thinking of
Klingon (the Star Trek language).
It's probably featured in Star Trek games, just as
High Valyrian may be featured in Game of Thrones/A Song of Fire and Ice games.
Yeah, while creating a language can no doubt be a fun exercise for linguists, it also takes some effort, so it will probably be more frequent in more well developed fictional universes. I believe Tolkien was somewhat of a pioneer in this field. I would expect languages for smaller works of fiction to be quite simple, for the most part.