Answer3: hmmm. honestly, i did not think of the making it as tall as you wanted... i figured that the other 2 sizes (32x15) would keep the height in proportion. But that is a good point. There is now a height limit of 100px. Each tile does not need to fill the full 100px height, but that is the maximum. Since this is the maximum, each tile can have its own unique height / z axis as long as its within the 100px.
Answer5: Im not sure i know what you mean by are walls tiles. Anything you make in your scene must be in a tile form. If you want a wall in your scene, then use a recatangle / square iso tile. The height of it is up to you, as long as its under 100px.
So essentially, the size restriction is 32x100, not 32x15. If, for example, I don't like 32x15 boxes and would rather go with 32x16, it's legally within the restrictions? There's also nothing stopping me from abusing as many 32x96 boxes (so they line up cleanly) to fill in as much area with pixels as possible, and then use smaller tiles to fill in the gaps?
Answer1: About the 40 tile maximum, it refers to how many unique/original tiles you are allowed. You are allowed to use them repeatedly as much as you want. ex: you could make 1 unique grass tile and reuse it over and over to make a grassy land. This includes any flips / mirrors/ rotations / etc. Any alteration, or any change in a tile counts towards your 40 tile original tile limit.
So, flips, mirrors, and rotations DON'T count towards unique tile count, correct? We're assuming the map is running on some sort of engine that allows for such transformations?
Wugh. Also, if we're going to be using transparency, does one of the 16 colors from the palette get dropped to act as a transparant color, or do we get 16 colors + transparency?