When the main character only had 1 game but the total of its spin-off exceeds 100 games.

I'm pretty sure Rabbids have outnumbered Rayman by now. So not that unheard of.
May be, there's no story in the game, but we'll be getting the story soon in a comic form from IDW.
Probably best no story. I didn't like the lack on animation in Sonic Free Riders and Team Sonic Racing.