There was a time when Steve Jackson Games made a lot of supplements for the GURPS line that served to adapt influential or popular SF/F books into something viable for use as a tabletop RPG setting. While the choices were necessarily constrained by both internal budgets and licensor friendliness, we got a few gems here and there- and none coruscate more brilliantly than Gurps Lensman.
For people who were not around when the Lensman series was in its heyday, or missed the reprints, you would not believe how far into the Memory Hole this series went until recently. When this book got published in 1994, there was at least one whole generation (if not two) that never heard of these books or knew of what great influence they had on SF in books, comics, film, and television world-wide. I was one of that many, and I could not find a copy of any of them in any local store for love or money. This was a close as I got.
And with this supplement, I had everything I need to fully engage with a Lensman’s perspective- to see it all the way someone granted the power of the Lens (and the duties that come with it) does, to do all that they do, and to risk all that they risk in defense of something figurative and literally bigger than themselves. This isn’t just partaking in the things that build, sustain, and invigorate a culture into a civilization; this is being one of the very pillars of Civilization, a load-bearing pillar upon which the fates of billions–even trillions–rests. Far beyond being a Knight in King Arthur’s court, this is what being a Jedi should be (but isn’t).
Despite the issues that every GURPS edition has with high-powered milieu, this supplement does do the setting justice. Sure, you can play something other than a Lensman, but that’s not why you have this supplement: you’re there for being Civilization’s greatest agent, advocate, and champion. It’s no different than not playing a Knight in Pendragon. Even if you don’t care for GURPS, what’s here will be transferable to the ruleset of your choice; the technology notes are often in real-world (Imperial) units or otherwise giving real-world referents so you can easily make this work for you at your table.
If the Amazon link above doesn’t have what you’re willing to pay, go try directly from Steve Jackson Games; they may have it in PDF at a price you’re willing to accept. Either way, if you’re into tabletop RPGs and seek out ways to play Superversive games, you’re a zwilnik to not have GURPS Lensman in your library.