And DevliN, the problem is that you would have alot of trouble making your minimap look like that with a 192x192 map. It's like a 96x96, it distorts the minimap. If you could figure out the ratio though, that minimap would truely pwn.

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Wait, what? My image is 192 x 192 pixels. Treat each pixel as if it is a 1x1 square on a map and it will definately look the same. Basically if you were to blow up the image that I posted in Photoshop and then use it as a reference while making terrain, you'll see that the map will come out exactly the same.
Each 50 x 50 square on the right and on the left are 4 squares from the borders. And then the other 50 x 50 squares are 4 squares apart from the others. Essentially there are four 1x1 squares between each 50 x 50 square if that makes any sense.