Like all RPGs based on movie and TV series, these kinds of products wax and wane in their popularity. Now, nearly 20 years on from the Decipher Star Trek RPG, it’s still a valuable system for those completely new to the genre, and/or veteran gamers. The Decipher system was primarily designed for Next Gen era campaigns, but as a source, it’s valuable to almost any Star Trek campaign era and even other systems. The books like this one are quality products, durable, and great as source material whatever you do with it. The only downside to the system is that there will be no further modules or updates. It’s a shame because this was a good effort. Creative GMs of Star Trek can make great use of the 5 or 6 books, including Aliens.