Same as above except the entry ways are cut in:
No wall border, just pure black:
A skewed perspective where all parts of the walls are seen at all angles. (legend of zelda style):
If you know of any more please share. Also as an additional question, what sort of system do you think works best for collision/interaction with the walls? (particularly the bottom half of the wall) Should the player collide with the edge directly? Should the player pass under the edge (as to give the illusion of depth) The first option is used quite often, the second option seems more realistic but the problem lies in the fact that things are obscured from view. By doing this, should we then have it "fade" so that you can see through the upper edge of the wall? Here's an example of what I'm referring to:



