OK so the info straight out of the books so far: over 200 years ago the world was ravaged by some major disasters, some wars happened and big bombs went off. This culminated in the Diseray, an event that permanently breached our reality and allowed all manner of nightmarish magical/mythical creatures in from the other side. These Othersiders are attracted to the silly amounts of manna in our little human bodies and since we're easy little morsels to catch and eat... anyway over the many years military fought as hard as humanly possible, saved everyone humanly possible and among several smaller and less successful settlements across the world Apex city was gradually built on the east coast of the former united states. 

Some humans, most of us having a bit of magic ability now, develop powers and became mages while others were born with psychic powers and became psimons (the 2 powers are not known to mix in humans) Apex also became the strongest of strongholds by inventing magic/tech barriers to protect the city and its cits (citizens) but also the biggest target with all those delectable humans gathered in one spot.  

Now none of all that would be much possible were it not for the Hunters. Why so special? Because while a mage or a psi on could handle maybe one othersider at a time quite nicely a Hunter can use magic, conventional (usually cold iron) weapons and summon two to eight Hounds to aid them in taking down whole groups of nasty monsters, even the big ones. Hounds are other siders as well but they choose to work with humans to take down manna rich targets, and no, Hounds are not always canine-like though that is more common than not so far as I know. Hunters have magic circles burnt into the backs of their hands like decorative mandalas with a symbol for each hound when a Hunter 'pops powers' (youngster lingo has gotten worse over the last two centuries.)

Now in Apex it is important to make the Cits feel safe even if they really are not, apex is the big target for the other siders after all. It is also a thing to entertain people and keep them from thinking too much about... stuff, panicked sheep, you know? So in Apex, where most Hunters are needed and are sent when discovered, Hunters are also celebrities each with their own channel televising their hunts. Elite Hunters get only one channel since they are taking on the worst of the monsters and the Mysterious Folk that the city leaders do not even want the citizens knowing about. Oh, and all these Hunts are televised as well beyond Apex city when in fact much of the Hunting is happening just outside or even inside the city's first barrier. 

So that is the essential information I believe though I should elaborate further in the near future. But the option to mix familiar conventional weapons, some new tech, army mages, psimons, all manner of creatures from any mythology (no demons or angels so far) and these hunters and their hounds... seemed like solid fun Rap material to me. Also I think dystopian worlds, overused as they may be, are still really fun. I hope you think so, too :3