I am laughing at myself ignorant on this. Google didn't produce an obvious answer. Could someone explain what orthogonal map and isometric map are, and how they are different?
Answer
I made a picture to sum it up. Basically, the difference between both types of maps has mostly to do with the angle formed between each axis which results in one appearing to be seen from a topdown point of view, while the other appears to be seen from an angle:
It is also worth noticing the visual difference between an isometric projection and perspective projection which is what almost every 3D game uses.
Notice how lines are drawn parallel to each other when using an isometric projection, while when using a perspective projection, lines converge towards one (or more) vanishing points.
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