Campaign A: A gonzo science-fantasy campaign, that takes place on a planet, which was terraformed by a now fallen galactic empire - but might include trips to different planets, including Earth. The planet is full with different kind of alien races and creatures, portals to other worlds, ruins of advanced civilizations, and so on. There are going to be some common monsters, but every adventure will have unique beasts too. This campaign is inspired by Arduin, Empire of the Petal Throne, Wilderlands, and the Wizardy and Might & Magic series. The usual fantasy races are available (dwarves, elves, halflings, orcs, etc.), but so are insectoids, lizardmen, felines, huge hairy apemen or whatever the players have in mind. Race and class are seperated, but I still didn't decide whether I'm going to need some more classes (ie.: alignment based "sub-classes" for fighters, like the thieves have), or the basics are going to be enough.
Campaign B: A bit more serious science-fantasy campaign, that takes place in the far future of Earth, on the land that once was called Europe (although only a few know about this) - but might include trips to Mars or to the past. The planet has changed a lot thanks to weapons of mass destruction, the moving of tectonic plates, the change of climate. Civilization and technology is like in the early iron age, and it's dominated by humans, but demi-humans are there too - just like mutated monsters, aliens from outer space, lost technology. All monsters are going te bo unique, once you kill it's tribe or family, it's gone from the planet. This campaign is inspired by Dying Earth, Book of the New Sun and Zothique. Character choices are going to be exactly the same, like in the core rules (race as class remains too).
I really like both ideas, but I don't have enough time to run two campaigns. I'm planning to write reports about how the sessions went (I did it for my Wilderlands campaign too, but it's available only in hungarian) and share what material and house rules I have written. Although the final decision is mine (and I have plenty of time to decide