TheLastStarFighter on 04 December 2013
As it has been said, it's not difficulty which is the barrier to 3D games, it's complexity. 3D Marios aren't harder, they're just more complex. In particular, you can get lost. There is also the issue of "timing" things like jumps in 3D which is a challenge. This is a most significant issue when it comes to females, who have a scientifically proven difficulty with 3D visualization. If a large portion of your potential customers have a challenge knowing where they are on a given level, you have less potential customers. 3D world helps that a little with the semi-locked camera.
