All of a sudden, I'm vastly intrigued by this. Mostly because I've been waiting for my Sonic Adventure 3 for quite a while. But you probably...
I remember playing Sonic Heroes and coming across something like this in Hang Castle. There was a hint specifically stating that stuff was hidden...
I don't believe so. Just add models.
Also... all that I've seen for this is the concept, and I already love it. Good luck with this!
I'd say look at Knuckles's/Rouge's underwater sections from Sonic Adventure 2, or some of the sections from Aquarium Park, but they both have...
If and only if
This can be shortened to:
Iff and only iff
can be shortened to
Iffff and only iffff
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