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I'm not really sure. There were two icons on the bottom that changed things. I know I was able to get rid of the mountain and there was another with some kanji characters.

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Here's the link -> Link

It's in Japanese but the functions are pretty straightforward. It appears that they've added a few new options since I've last seen it.

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I'm glad you like it. I didn't make the eel though. There's this generator that allows you to customize it and then you're supposed to make a "eelginka" out off it.