Actually, unlike Tsukei River, judging from the layout screens this level is substantially different even though the layout is strongly similar. No its not original, but its not entirely ripped off either. The other was not only the same through layout but also in certain small places which were exactly the same.
Personally it looks like a Lime Forest/Thunder Citadel hybrid. Because this level is not very original, then whether or not its ripped off people are going to prefer the official map which works better overall. Some of the details are pretty nice, but I'd suggest not releasing maps that were so heavily based on existing ones and waiting until you have one that is nothing or very little like the ones we are used to.
