Makes sense. Thanks again =)
Arent there many seasons of Tousouchuu? Or do you mean that it is a difference situation because there are different contestants in each season and not the same characters/people in the show all the time? Just wondering out of curiousity.
But regardless of being a new IP or not, it sold really great. Its surprising how consistent it sold for a longer period of time. I wonder how the sequel will sell (maybe it isnt directly a sequel, but i think it has some relation to Tousouchuu?).
An anime comes with a fanbase that's video-game ready. The same people who watch Dragon Ball or One Piece or Pokemon already want to play games based on them. It's a built-in audience of geeks (sorry for the way it sounds, but it's true). There's a whole well-established universe, art-style, story, memorable protagonists and antagonists, a tone etc. that people will want to follow.
There's (was?) no Tousouchuu fanbase. It's a fun TV game, but it has no universe, no mythology, no storyline, no art-style. People who watch it aren't "geeks" who are likely to buy a Tousouchuu game based on name alone, just like people who watch MasterChef probably aren't a big video game audience that just can't wait to play a video game version of some cooking show they watch for entertainment at the end of a long day of work. People aren't passionate about it the way people are passionate about Dragon Ball or any other popular anime series.
The game is something completely new, as Kotaku wrote, "perhaps the most apt description is to call it a mix between Pac-Man and Mario Kart." I consider it a new video game IP because it came out of nowhere with no mythology to back it up and surprisingly created something new and fun. It does bear a title that already exists, and there are guys in black suits wearing sunglasses in both the TV show and the game, but that's about as far as it goes. It was a completely unproven "IP" that came with no expectations before the 3DS game.