If I think about playing Mario Kart without seeing it, there are just a few sounds that could make it feasible: a sound to indicate how far the kart is from the center of the road at the current location (and which side of center the kart is on); a sound to indicate which direction the road will soon be turning and the sharpness of the turn, proportional to the kart's velocity; a sound to suggest the player's facing direction, or perhaps the angle of deflection from the vector of the road; and a sound to suggest the proximity of enemies, which is effectively already handled by the unique engine sounds and character voices in MK64. It would almost certainly be necessary to use headphones to reliably use stereo sound for spatial orientation.
Unfortunately, I don't know how to do these things, but it seems like most of the mechanisms are already in the game. Lakitu tells you when you are facing the wrong way. Perhaps his little siren could blare very quietly if you are sightly off center and get louder as you angle farther off course. There is an overhead map representation that could be referenced to "see" the curvature of the track ahead. Different surfaces of the tracks make different sounds. Perhaps the center of the road could be asphalt, then on either side of that some sand, and either side of that, the rattling wooden planks. In automobiles, drivers instinctively pull away from the edge of the road when they hear the rumble strips on one side, so it's the same idea.
People have defeated Mike Tyson's Punch Out while blindfolded, and they did not have the heightened senses that blind people tend to develop. So this seems well within the realm of possibility.
This would be a fun project to work on.
my idea will sound very strange to you, but I'll try it because it would be super for me.
My problem is that I'm totally blind and I have no sight. But it's still possible for me to play video games, but only 2d fighting like mortal kombat (which I love most) or street fighter.
As I looked through the hacks I found many for super mario kart for snes and I think three for mario kart 64 for the n64.
Now my idea: wouldn't it be possible to create a patch for the called two games so that the games are accessible for blind persons? The kart you are driving had to steer itself only. Or another choice, the tracks had to be straight. And perhaps a sound to know that I'm ready to fire on an opponent.
Do you think that would be possible? I really would love playing such games if it would be possible.