Any Nintendo or Sega game.
Now, call me a fanboy, but even the least good of their games is still at least playable and entertaining, and besides, I´m too used to their mascots. I see myself in the future as a 60 year old man, who instead of being the typical grandpa, plays the new Mario-whatever sport is-multiplayer game in the (insert name of future nintendo handheld) while having some beer in the typical Cheers-like bar lol.
I just can´t imagine my free time without Mario, Kirby, Sonic, Aiai, Link, Marth, Fox, Nights and all those guys I grew up with.
Now, the companies themselves may do several stupid things pissing their fans (sometimes I believe they flip a coin to determine which region the next game will be released on. How come Europe STILL hasn´t got Excitebots?) but in general, their games are still so much fun that you can forgive them :P