I would totally buy a Car Wars: Top Gear RPG.
The was a Pokemon RPG:Pokemon, though ... there's one I thought we would see a game for back in the 90's and it never happened.
The was a Pokemon RPG:
http://boardgamegeek.com/boardgame/1625/pokemon-jr-adventure-game-pokemon-emergency
It just never got fully developed, only a starter game.
The was a Pokemon RPG:
http://boardgamegeek.com/boardgame/1625/pokemon-jr-adventure-game-pokemon-emergency
It just never got fully developed, only a starter game.
There was also Cute and Fuzzy Cockfighting Seizure Monsters which was Pokemon in all but name.
I bet they won't make anything like as much money with Firefly than they would have with Marvel Heroic though.
The so-called 'Big Six' licenses, according to RPG historian Shannon Appelcline, are:
Lord of the Rings
Harry Potter
Star Wars
Star Trek
Marvel
DC Comics
Harry Potter won't be happening any time soon due to JK Rowling's aversion to the rpg hobby (she famously tried to deny that she was a fantasy writer, as she thought it was embarrassing to her social circles, so she must view RPGs as the Antichrist of good taste...).
The rest have been taken up by various companies over the years. Personally I would add Doctor Who to that list these days, and maybe Game of Thrones as both are phenomenally successful TV franchises currently.
I really don't know what else to add to the list that truly qualifies as being as big. Avatar could be, I suppose, if it grinds out a few sequels. Top Gear (wherein you play reactionary, politically incorrect, middle aged men who have a puerile fascination for fast cars and hate the environment).
I'm not sure how Harry Potter could be a "Big Six" RPG license when it's never been a game? I agree on Doctor Who though, and it seems as though Warhammer 40,000 does pretty well as a licensed RPG.
In terms of marketing potential it's a top license. Indeed, one prominent game company owner pointed out that they could 'make a fortune' if they could obtain the Harry Potter license and start producing 'Choose Your Own Adventure' style books out of them....but they failed to get a license. I can't stand it, personally, but Harry Potter is the biggest selling book series of all time - a huge potential market.