From the Journal of Test Subject #232: 31.21 N, 28.71 W. 2043 AD. It's hard to believe that just fifty years ago people were worried about the water levels rising. I joined the Testing Course Program just a week ago and they brought me to one of these island mountains. Ever since the Combine came they had been sucking up the water and sending it back to wherever they came from. So the water level fell so far that the underwater mountains became islands, then hills, and then finally towering mountains, jutting out of the water like some kind of massive wrecked ship. Then after the Combine were beaten away, this new Aperture corporation went around claiming all these mountains for research. Word was, they were extremely benevolent up until the founder died, and then they built this big robot lady to replace her. Then the tests got worse. The scientists around the place don't seem to know, and that seems odd. I'll just say I feel sorry for the next subject.
Let's see if you can find the three changes that have been made to this since you last saw it.
Is this RLY portal mod?! not portal 2?!
Yes it is a Portal mod, not Portal 2.
I know why.. it's because the outside and human models are only compatible with portal 1 right?
Yes. That's part of it.
The other part is that I started this mod ~1 month before I even owned Portal 2 and really didn't feel like changing it, in addition to the fact that there is technically no support as of yet for creating Portal 2 mods.
Impressive.
What!? Outside areas aren't compatible with Portal 2? Why?
No no no no, they are, he was mistaken. However it is NOT compatible with human NPCs anymore.