I'mma have to jump on the Halo bandwagon for this one. It moved consoles, changed the face of console gaming, it was re-released for the 360 and people bought it again.
However of the two choices... I didn't get a N64 or a Wii, so by proxy I didn't get Mario 64 or Wii Sports. All I can say is that I have played Mario 64 once back in the day and was not impressed. I disliked the controller more than anything. I have played Wii Sports on multiple occasions. Mostly drunk at parties, but I have played it more. Wii Sports is the winner to me.
However of the two choices... I didn't get a N64 or a Wii, so by proxy I didn't get Mario 64 or Wii Sports. All I can say is that I have played Mario 64 once back in the day and was not impressed. I disliked the controller more than anything. I have played Wii Sports on multiple occasions. Mostly drunk at parties, but I have played it more. Wii Sports is the winner to me.