The whole world map area is 12.24 feet, so let's put that into, say, 1224 miles. Each block in minecraft is 3 yards, 1 mile = 1760 yards, so 1760 x 1224. That's an area of 2,154,240 blocks in Minecraft...a little too many to get done in reasonable time. If you really want to do it, maybe on a smaller scale, I'll do it with ya. But it still wouldn't be possible probably, because so many mechanics are needed that aren't in Minecraft, such as sailing, unless mods are used. Really, the game could be made on it's own, but I just can't model, code, texture, and I absolutely don't have the money. I found a troll saying he wanted to make a similar game, and people were saying he can't do it. One guy told him he needed to learn C++ or C#, and he said "Thanks, but I don't want to make a text game. I want to make a game with graphics :)" What an ignorant fool.