Pokemon - Catching, training and battling Pokemon is a life I could live with. I also like the idea of living in an 8-bit world.
Spyro (PS Edition) - The number of portals that lead to different worlds are never-ending. And the beautiful surroundings and environments would make life a passive one.
Costume Quest - Trick or treating never gets old in this game, there are lots of things to interact with and things to do. Teaming up with friends against monsters in Halloween would be a fun life.
Mario - What could be cooler than jumping on heads. lmao.