It’s Space Opera Week. While a lot of people who love this style of story are content to read or watch them, a significant number of us want to make our own. There’s plenty of writing-specific advice around, so I’ll focus on those of us who want to game them instead.
So, you want a Superversive Space Opera? Where do you start? Well, if you’re not doing GURPS Lensman, you still want to have that book (or the novels it’s about) handy. That example will be the model you’ll find easiest to adapt for gaming purposes.
Your players play characters who champion their cultural traditions and institutions. This means you’re some sort of Galactic Patrol, formally or otherwise, because the standard gameplay scenario involves dealing with predatory actors seeking to undermine your people. As active agents, you have reason to seek out such trouble and put a stop to it.
Your players play pro-active characters. Be it by acting on orders from another, or one of the players coming to the table with a plan, a Superversive Space Opera relies on the characters being the ones driving the game and that means acting according during play. This is not a place for passive or reactive people; that’s for other media.
Your game has a solid moral core to it. Just like playing Pendragon Superversive Space Opera requires that the players engage with a solid moral foundation. This is best made explicit to the players at the beginning (again, like Pendragon) so you can have everyone on the same page and not waste time doing that after you’re underway.
Do that, and you’re golden. Now you see why I recommended having those Lensman books handy. These elements are not only present, but front-and-center where they can’t be ignored, which is what you want when you’re looking for a model to adapt to your game at your table. There’s plenty of others out there, so pick what you want to use and commit to it. The fun you have will depend on the work you put in, so have at it.