Star Trek Role-playing Game is a line role-playing games set in the fictional "Star Trek" universe and published by Last Unicorn Games (LUG). Three games were released: in 1998, Star Trek: Deep Space Nine Role Playing Game and Star Trek Role Playing Game both in 1999.
Development.
Due to licensing issues, LUG did not release the game as a single core rulebook and setting supplements for the various series but instead intended to release a corebook for every series. The "Star Trek" license was lost to Decipher before a "" rulebook could be released.
Steven S. Long and Kenneth Hite joined in the developers working for Last Unicorn Games on the "Icon system" for their line of licensed "Star Trek" role-playing games; to get "" ready for GenCon 31, they were flown out to Los Angeles for two weeks. After the design of "Icon" was done, Long was made the line developer for the "Star Trek: Deep Space 9" role-playing game.
The Next Generation (TNG).
"The Next Generation Role-playing Game" was released in 1998. It is based on "".
"Deep Space Nine" (DS9).
The "Deep Space Nine Role Playing Game" was released in 1999. It is based on "".
"The Original Series" (TOS).
The "Star Trek Role Playing Game" was released in 1999. It is based on "".
Other published materials.
Web enhancements.
Last Unicorn Games was one of the first roleplaying companies to use the concept of releasing additional pages for published books via the web. LUG dubbed these "Icon Links," in reference to their overall "Icon System" game mechanics (the term Web Enhancement hadn't been invented yet). Unlike current web enhancements, which are simply additions that can be added to the end of a book, LUG took a unique approach, by planning the enhancements ahead of time, and printing a small Icon symbol at various points in a given book, informing the reader that additional material on the subject-at-hand was available on the company's website to read or 
download and print. These enhancements are now being stored online, and can be downloaded from Memory Icon, under the Icon Links section.
Unpublished materials.
Many additional books and supplements were planned, and quite a few had various chapters already written in varying degrees of completion when the product line was cancelled. LUG's former pool of writers has been very supportive of the fan movement to expand and continue playing the game. In support of this, much of the unpublished material has been released on the internet.
S. John Ross has posted his unfinished manuscripts on the Untaken Treks pages of his website.
Steve Kenson has posted his unfinished manuscripts on the "Star Trek: The Lost Episodes" pages of his website. 
Steven S. Long has been the most active amongst the fan movement. He took unfinished materials for the game and completed them on his own time. Additionally, he continued this work beyond the original envisioned volumes, completing seven entire new books. These new books were distributed online free of charge. 
And the Spacedock Series:
They can be downloaded in PDF form from Memory Icon, under the "Spacedock" section, and are suitable for printing.
Reception.
"The Next Generation: Narrator's Toolkit" was reviewed in the online second version of "Pyramid" which said "Within this tome are the most useful instructions on how to run a role playing game that I have ever seen set to paper. And it's also useful to anyone running a "Star Trek: The Next Generation" RPG session."
References.
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